Finding the Fourth Proportional to 131,815.50, 181,904.42 and 71,384.74

Step by Step Solution

1. Step 1: Write the proportion equation
   131,815.50 : 181,904.42 = 71,384.74 : x
2. Step 2: Convert to fraction form
   131,815.50/181,904.42 = 71,384.74/x
3. Step 3: Cross multiply
   131,815.50x = 181,904.42 × 71,384.74
4. Step 4: Simplify right side
   131,815.50x = 12,985,199,450.25
5. Step 5: Solve for x
   x = 12,985,199,450.25/131,815.50
6. Step 6: Final answer
   x = 98,510.42