Finding the Fourth Proportional to 78,517.50, 108,354.96 and 42,707.94

Step by Step Solution

1. Step 1: Write the proportion equation
   78,517.50 : 108,354.96 = 42,707.94 : x
2. Step 2: Convert to fraction form
   78,517.50/108,354.96 = 42,707.94/x
3. Step 3: Cross multiply
   78,517.50x = 108,354.96 × 42,707.94
4. Step 4: Simplify right side
   78,517.50x = 4,627,617,130.38
5. Step 5: Solve for x
   x = 4,627,617,130.38/78,517.50
6. Step 6: Final answer
   x = 58,937.40