QUESTION $11$

Your grandparents would like to establish a trust fund that will pay you and your heirs $$215,000$ per year forever with the first payment $7$ years from today. If the trust fund earns an annual return of $4\mathrm{.}2$ percent, how much must your grandparents deposit today?

$\backslash$table$[[$$$3,999,289\mathrm{.}62$