problem: A man nearing retirement wants to invest some money in a fund that compounds annually at a rate of 6 percent, so that in five years, he will have at least $\$100,000$.  How much money must he invest now to make that happen?  (Give your answer to the nearest dollar.)
solution: Let $x$ be the amount the man invests now, in dollars.  Then in five years, at a six percent annual interest rate, he will have $x \cdot 1.06^5$ dollars.  Therefore, $x$ must be at least \[\frac{100000}{1.06^5} = \boxed{74726},\]to the nearest dollar.