Finding the Fourth Proportional to 131,161, 181,002.18 and 71,545

Step by Step Solution

1. Step 1: Write the proportion equation
   131,161 : 181,002.18 = 71,545 : x
2. Step 2: Convert to fraction form
   131,161/181,002.18 = 71,545/x
3. Step 3: Cross multiply
   131,161x = 181,002.18 × 71,545
4. Step 4: Simplify right side
   131,161x = 12,949,800,968.10
5. Step 5: Solve for x
   x = 12,949,800,968.10/131,161
6. Step 6: Final answer
   x = 98,732.10