$99,200,000,000,000.00

... the correct amount of unfunded liabilities of the United States, as exposed by Richard W. Fisher, president of the Dallas Federal Reserve Bank in a speech in San Francisco May 28, 2008.

He breaks down the obligations in this excerpt from his speech, which has the interesting title "Storms on the Horizon:" (Emphasis added)

The infinite-horizon present discounted value of the unfunded liability for Medicare A is $34.4 trillion. The unfunded liability of Medicare B is an additional $34 trillion. The shortfall for Medicare D adds another $17.2 trillion. The total? If you wanted to cover the unfunded liability of all three programs today, you would be stuck with an $85.6 trillion bill. That is more than six times as large as the bill for Social Security. The infinite-horizon present discounted value of the unfunded liability for Medicare A is $34.4 trillion. The unfunded liability of Medicare B is an additional $34 trillion. The shortfall for Medicare D adds another $17.2 trillion. The total? If you wanted to cover the unfunded liability of all three programs today, you would be stuck with an $85.6 trillion bill. That is more than six times as large as the bill for Social Security. It is more than six times the annual output of the entire U.S. economy.

Why is the Medicare figure so large? There is a mix of reasons, really. In part, it is due to the same birthrate and life-expectancy issues that affect Social Security. In part, it is due to ever-costlier advances in medical technology and the willingness of Medicare to pay for them. And in part, it is due to expanded benefits—the new drug benefit program’s unfunded liability is by itself one-third greater than all of Social Security’s.

Add together the unfunded liabilities from Medicare and Social Security, and it comes to $99.2 trillion over the infinite horizon. Traditional Medicare composes about 69 percent, the new drug benefit roughly 17 percent and Social Security the remaining 14 percent.

I want to remind you that I am only talking about the unfunded portions of Social Security and Medicare. It is what the current payment scheme of Social Security payroll taxes, Medicare payroll taxes, membership fees for Medicare B, copays, deductibles and all other revenue currently channeled to our entitlement system will not cover under current rules. These existing revenue streams must remain in place in perpetuity to handle the “funded” entitlement liabilities. Reduce or eliminate this income and the unfunded liability grows. Increase benefits and the liability grows as well.

Let’s say you and I and .. every U.S. citizen who is alive today decided to fully address this unfunded liability through lump-sum payments from our own pocketbooks, so that all of us and all future generations could be secure in the knowledge that we and they would receive promised benefits in perpetuity. How much would we have to pay if we split the tab? Again, the math is painful. With a total population of 304 million, from infants to the elderly, the per-person payment to the federal treasury would come to $330,000. This comes to $1.3 million per family of four—over 25 times the average household’s income.

The United States Government consequently has only two choices, both bad. Repudiate the obligations, or print money to spark a hyperinflation. If the U.S. dollar had been backed by gold, this could not have occurred.