Finding the Fourth Proportional to 103,598.52, 142,978.60 and 58,278.41

Step by Step Solution

1. Step 1: Write the proportion equation
   103,598.52 : 142,978.60 = 58,278.41 : x
2. Step 2: Convert to fraction form
   103,598.52/142,978.60 = 58,278.41/x
3. Step 3: Cross multiply
   103,598.52x = 142,978.60 × 58,278.41
4. Step 4: Simplify right side
   103,598.52x = 8,332,565,472.03
5. Step 5: Solve for x
   x = 8,332,565,472.03/103,598.52
6. Step 6: Final answer
   x = 80,431.32