Finding the Fourth Proportional to 103,141.50, 142,335.27 and 58,429.50

Step by Step Solution

1. Step 1: Write the proportion equation
   103,141.50 : 142,335.27 = 58,429.50 : x
2. Step 2: Convert to fraction form
   103,141.50/142,335.27 = 58,429.50/x
3. Step 3: Cross multiply
   103,141.50x = 142,335.27 × 58,429.50
4. Step 4: Simplify right side
   103,141.50x = 8,316,578,658.47
5. Step 5: Solve for x
   x = 8,316,578,658.47/103,141.50
6. Step 6: Final answer
   x = 80,632.71