Finding the Fourth Proportional to 107,200.80, 147,766.56 and 84,502.96

Step by Step Solution

1. Step 1: Write the proportion equation
   107,200.80 : 147,766.56 = 84,502.96 : x
2. Step 2: Convert to fraction form
   107,200.80/147,766.56 = 84,502.96/x
3. Step 3: Cross multiply
   107,200.80x = 147,766.56 × 84,502.96
4. Step 4: Simplify right side
   107,200.80x = 12,486,711,709.02
5. Step 5: Solve for x
   x = 12,486,711,709.02/107,200.80
6. Step 6: Final answer
   x = 116,479.65