Finding the Fourth Proportional to 131,780.18, 181,854.42 and 71,350.34

Step by Step Solution

1. Step 1: Write the proportion equation
   131,780.18 : 181,854.42 = 71,350.34 : x
2. Step 2: Convert to fraction form
   131,780.18/181,854.42 = 71,350.34/x
3. Step 3: Cross multiply
   131,780.18x = 181,854.42 × 71,350.34
4. Step 4: Simplify right side
   131,780.18x = 12,975,373,788.23
5. Step 5: Solve for x
   x = 12,975,373,788.23/131,780.18
6. Step 6: Final answer
   x = 98,462.26