Finding the Fourth Proportional to 131,521.05, 181,499.85 and 71,091.54

Step by Step Solution

1. Step 1: Write the proportion equation
   131,521.05 : 181,499.85 = 71,091.54 : x
2. Step 2: Convert to fraction form
   131,521.05/181,499.85 = 71,091.54/x
3. Step 3: Cross multiply
   131,521.05x = 181,499.85 × 71,091.54
4. Step 4: Simplify right side
   131,521.05x = 12,903,103,846.27
5. Step 5: Solve for x
   x = 12,903,103,846.27/131,521.05
6. Step 6: Final answer
   x = 98,106.76