QUESTION $42$ Below are actual sales data $($in millions$)$ for the past six months at a large retail store. Month May June July August September October Sales $($in millions of dollars$)403841444243$ In retrospect, what would the $4-$month moving average forecast for September have been $($in millions of dollars$)?40\mathrm{.}7541\mathrm{.}2541\mathrm{.}3342\mathrm{.}00$