Finding the Fourth Proportional to 71,713.32, 98,966.82 and 39,449.31

Step by Step Solution

1. Step 1: Write the proportion equation
   71,713.32 : 98,966.82 = 39,449.31 : x
2. Step 2: Convert to fraction form
   71,713.32/98,966.82 = 39,449.31/x
3. Step 3: Cross multiply
   71,713.32x = 98,966.82 × 39,449.31
4. Step 4: Simplify right side
   71,713.32x = 3,904,172,761.89
5. Step 5: Solve for x
   x = 3,904,172,761.89/71,713.32
6. Step 6: Final answer
   x = 54,441.39