Finding the Fourth Proportional to 131,274, 181,158.12 and 71,658

Step by Step Solution

1. Step 1: Write the proportion equation
   131,274 : 181,158.12 = 71,658 : x
2. Step 2: Convert to fraction form
   131,274/181,158.12 = 71,658/x
3. Step 3: Cross multiply
   131,274x = 181,158.12 × 71,658
4. Step 4: Simplify right side
   131,274x = 12,981,428,562.96
5. Step 5: Solve for x
   x = 12,981,428,562.96/131,274
6. Step 6: Final answer
   x = 98,888.04