Finding the Fourth Proportional to 131,648.64, 181,674.58 and 71,219.15

Step by Step Solution

1. Step 1: Write the proportion equation
   131,648.64 : 181,674.58 = 71,219.15 : x
2. Step 2: Convert to fraction form
   131,648.64/181,674.58 = 71,219.15/x
3. Step 3: Cross multiply
   131,648.64x = 181,674.58 × 71,219.15
4. Step 4: Simplify right side
   131,648.64x = 12,938,708,255.83
5. Step 5: Solve for x
   x = 12,938,708,255.83/131,648.64
6. Step 6: Final answer
   x = 98,282.12