Forecast period $27$ in $4$ different ways.

In column C$,$ use a three period moving average.

In column D$,$ use a $4$ period weighted average with weights, from most recent to least recent, $5,2,1,1.$

In column E$,$ use an exponential smoothing model with alpha $\backslash (=\mathrm{.}45\backslash ).$ Put alpha in a cell, so it can be changed. And build the forecast starting in period $1.$

In column F$,$ use a time series forecast with a linear fit to the Time period number.

In all cases, show one digit past the decimal of precision.

What would be the forecast for period $27,$ using exponential smoothing, if alpha was $85?($use precision of one digit past the decimal.$)$