Finding the Fourth Proportional to 131,790.82, 181,871.67 and 71,362.21

Step by Step Solution

1. Step 1: Write the proportion equation
   131,790.82 : 181,871.67 = 71,362.21 : x
2. Step 2: Convert to fraction form
   131,790.82/181,871.67 = 71,362.21/x
3. Step 3: Cross multiply
   131,790.82x = 181,871.67 × 71,362.21
4. Step 4: Simplify right side
   131,790.82x = 12,978,764,307.59
5. Step 5: Solve for x
   x = 12,978,764,307.59/131,790.82
6. Step 6: Final answer
   x = 98,480.03