Finding the Fourth Proportional to 78,502.71, 108,332.71 and 42,691.95

Step by Step Solution

1. Step 1: Write the proportion equation
   78,502.71 : 108,332.71 = 42,691.95 : x
2. Step 2: Convert to fraction form
   78,502.71/108,332.71 = 42,691.95/x
3. Step 3: Cross multiply
   78,502.71x = 108,332.71 × 42,691.95
4. Step 4: Simplify right side
   78,502.71x = 4,624,934,638.68
5. Step 5: Solve for x
   x = 4,624,934,638.68/78,502.71
6. Step 6: Final answer
   x = 58,914.33