Finding the Fourth Proportional to 131,859.08, 181,966.42 and 71,429.72

Step by Step Solution

1. Step 1: Write the proportion equation
   131,859.08 : 181,966.42 = 71,429.72 : x
2. Step 2: Convert to fraction form
   131,859.08/181,966.42 = 71,429.72/x
3. Step 3: Cross multiply
   131,859.08x = 181,966.42 × 71,429.72
4. Step 4: Simplify right side
   131,859.08x = 12,997,810,430.00
5. Step 5: Solve for x
   x = 12,997,810,430.00/131,859.08
6. Step 6: Final answer
   x = 98,573.50