Problem $\backslash$#$6$: Return to the spreadsheet from the previous problem. Keep the initial deposit and all the interest rates the same. Use Excel's "Goal Seek" to determine the amount by which the deposit should increase each month in order to reach a final value of $\backslash (\backslash$$ $149790\mathrm{.}46\backslash )$ after the $61$ st deposit.

What should be the monthly increase in the size of the deposit?

$($Note: "Goal Seek" is usually located under "What$-$If Analysis" under the "Data" tab.$)$