$22.$ Handy, Inc., produces a solar$-$powered electronic calculator that has experienced the fol$-$ lowing monthly sales history for the first four months of the year, in thousands of units.

January

$23\mathrm{.}3$

March

$30\mathrm{.}3$

February

$72\mathrm{.}3$

April

$15\mathrm{.}5$

what is the exponential smoothing forecast made at the end of March for the sales in July? Assume $\backslash$alpha$=\mathrm{.}15.$