Finding the Fourth Proportional to 102,382.52, 141,359.85 and 71,820.54

Step by Step Solution

1. Step 1: Write the proportion equation
   102,382.52 : 141,359.85 = 71,820.54 : x
2. Step 2: Convert to fraction form
   102,382.52/141,359.85 = 71,820.54/x
3. Step 3: Cross multiply
   102,382.52x = 141,359.85 × 71,820.54
4. Step 4: Simplify right side
   102,382.52x = 10,152,540,761.32
5. Step 5: Solve for x
   x = 10,152,540,761.32/102,382.52
6. Step 6: Final answer
   x = 99,162.84