Finding the Fourth Proportional to 71,020.10, 98,007.62 and 39,188.96

Step by Step Solution

1. Step 1: Write the proportion equation
   71,020.10 : 98,007.62 = 39,188.96 : x
2. Step 2: Convert to fraction form
   71,020.10/98,007.62 = 39,188.96/x
3. Step 3: Cross multiply
   71,020.10x = 98,007.62 × 39,188.96
4. Step 4: Simplify right side
   71,020.10x = 3,840,816,013.89
5. Step 5: Solve for x
   x = 3,840,816,013.89/71,020.10
6. Step 6: Final answer
   x = 54,080.69