Finding the Fourth Proportional to 131,816.30, 181,904.25 and 71,386.45

Step by Step Solution

1. Step 1: Write the proportion equation
   131,816.30 : 181,904.25 = 71,386.45 : x
2. Step 2: Convert to fraction form
   131,816.30/181,904.25 = 71,386.45/x
3. Step 3: Cross multiply
   131,816.30x = 181,904.25 × 71,386.45
4. Step 4: Simplify right side
   131,816.30x = 12,985,498,834.47
5. Step 5: Solve for x
   x = 12,985,498,834.47/131,816.30
6. Step 6: Final answer
   x = 98,512.09