Calculate the forecast for period $7$ using a four$-$period moving average. The data is given bellow.

Day $1$ Rolls Sold is $50$

Day $2$ Rolls Sold is $50$

Day $3$ Rolls Sold is $48$

Day $4$ Rolls Sold is $60$

Day $5$ Rolls Sold is $53$

Day $6$ Rolls Sold is $60$