Finding the Fourth Proportional to 78,542.45, 108,385.37 and 42,732.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,542.45 : 108,385.37 = 42,732.50 : x
2. Step 2: Convert to fraction form
   78,542.45/108,385.37 = 42,732.50/x
3. Step 3: Cross multiply
   78,542.45x = 108,385.37 × 42,732.50
4. Step 4: Simplify right side
   78,542.45x = 4,631,577,634.63
5. Step 5: Solve for x
   x = 4,631,577,634.63/78,542.45
6. Step 6: Final answer
   x = 58,969.10