A manager has estimated the following cashflows from a 4-year project: year 1:$10,000; year 2:$15,200; year 3 : $11,000; year 4:$8,000 What is the future value of the unequal cashflow series if you use a rate of 9% ? $50,999 $51,544 $47,792 $74,598 none of these