The Lawn Plus Fertilizer Company distributes fertilizer to various lawn and garden shops. The company must base its quarterly production schedule on a forecast of how many tons of fertilizer will be demanded $($in tons$)$ from it$.$ The company has gathered the following data for the past three years from its sales records.

Q$)$ Suppose using some forecast method, the forecast for quarters $1,2$ and $3$ was $110,148,96.$ Compute the tracking signal for each of these $3$ quarters.