Finding the Fourth Proportional to 131,908.15, 182,033.89 and 71,478.78

Step by Step Solution

1. Step 1: Write the proportion equation
   131,908.15 : 182,033.89 = 71,478.78 : x
2. Step 2: Convert to fraction form
   131,908.15/182,033.89 = 71,478.78/x
3. Step 3: Cross multiply
   131,908.15x = 182,033.89 × 71,478.78
4. Step 4: Simplify right side
   131,908.15x = 13,011,560,375.85
5. Step 5: Solve for x
   x = 13,011,560,375.85/131,908.15
6. Step 6: Final answer
   x = 98,641.06