Finding the Fourth Proportional to 71,473.50, 98,633.89 and 39,642.48

Step by Step Solution

1. Step 1: Write the proportion equation
   71,473.50 : 98,633.89 = 39,642.48 : x
2. Step 2: Convert to fraction form
   71,473.50/98,633.89 = 39,642.48/x
3. Step 3: Cross multiply
   71,473.50x = 98,633.89 × 39,642.48
4. Step 4: Simplify right side
   71,473.50x = 3,910,092,061.20
5. Step 5: Solve for x
   x = 3,910,092,061.20/71,473.50
6. Step 6: Final answer
   x = 54,706.88