Finding the Fourth Proportional to 131,813.56, 181,902.88 and 71,384.30

Step by Step Solution

1. Step 1: Write the proportion equation
   131,813.56 : 181,902.88 = 71,384.30 : x
2. Step 2: Convert to fraction form
   131,813.56/181,902.88 = 71,384.30/x
3. Step 3: Cross multiply
   131,813.56x = 181,902.88 × 71,384.30
4. Step 4: Simplify right side
   131,813.56x = 12,985,009,756.78
5. Step 5: Solve for x
   x = 12,985,009,756.78/131,813.56
6. Step 6: Final answer
   x = 98,510.42