Finding the Fourth Proportional to 131,304, 181,200.96 and 71,688

Step by Step Solution

1. Step 1: Write the proportion equation
   131,304 : 181,200.96 = 71,688 : x
2. Step 2: Convert to fraction form
   131,304/181,200.96 = 71,688/x
3. Step 3: Cross multiply
   131,304x = 181,200.96 × 71,688
4. Step 4: Simplify right side
   131,304x = 12,989,934,420.48
5. Step 5: Solve for x
   x = 12,989,934,420.48/131,304
6. Step 6: Final answer
   x = 98,930.23