Finding the Fourth Proportional to 156,442.71, 215,829.89 and 102,058.82

Step by Step Solution

1. Step 1: Write the proportion equation
   156,442.71 : 215,829.89 = 102,058.82 : x
2. Step 2: Convert to fraction form
   156,442.71/215,829.89 = 102,058.82/x
3. Step 3: Cross multiply
   156,442.71x = 215,829.89 × 102,058.82
4. Step 4: Simplify right side
   156,442.71x = 22,027,342,304.69
5. Step 5: Solve for x
   x = 22,027,342,304.69/156,442.71
6. Step 6: Final answer
   x = 140,801.33