Finding the Fourth Proportional to 131,240.25, 181,111.55 and 71,624.25

Step by Step Solution

1. Step 1: Write the proportion equation
   131,240.25 : 181,111.55 = 71,624.25 : x
2. Step 2: Convert to fraction form
   131,240.25/181,111.55 = 71,624.25/x
3. Step 3: Cross multiply
   131,240.25x = 181,111.55 × 71,624.25
4. Step 4: Simplify right side
   131,240.25x = 12,971,978,576.97
5. Step 5: Solve for x
   x = 12,971,978,576.97/131,240.25
6. Step 6: Final answer
   x = 98,841.47