$($Exercise $4\mathrm{.}32)$ An employee currently is aged $36.$ earns $$50000$

per year, and expects to receive $3$

$\%$ annual raises at the end of each year until he is $64.$ The employee decides to contribute $6$

$\%$ of annual salary at the beginning of each year into a retirement plan until he is $64$ years old. How much will be available for retirement at age $65$ if the fund can earn a $7\mathrm{.}3$

$\%$ effective rate of interest?