Answer:
The lump sum should be of $5,000,000.
Explanation:
Giving the following information:
It is expected that he will need to cover an annual cost of $250,000 forever. The interest rate is 5% annual.
We need to calculate the present value of a perpetual annuity. We will use the following formula:
PV= Cf/i
PV= 250,000/0.05
PV= $5,000,000