Finding the Fourth Proportional to 71,129.27, 98,142.91 and 42,435.83

Step by Step Solution

1. Step 1: Write the proportion equation
   71,129.27 : 98,142.91 = 42,435.83 : x
2. Step 2: Convert to fraction form
   71,129.27/98,142.91 = 42,435.83/x
3. Step 3: Cross multiply
   71,129.27x = 98,142.91 × 42,435.83
4. Step 4: Simplify right side
   71,129.27x = 4,164,775,983.73
5. Step 5: Solve for x
   x = 4,164,775,983.73/71,129.27
6. Step 6: Final answer
   x = 58,552.21