Approximately how much principal would need to be placed into an account earning 3.575% interest compounded quarterly so that it has an accumulated value of $68,000 at the end of 30 years?
i = .03575/12 = .002979..
n= 360 quarter years
P(1.002979..^360) = 68000
P = 68000/ (1.002979..^360) = 23303.47