Finding the Fourth Proportional to 131,538.56, 181,480.16 and 80,498.07

Step by Step Solution

1. Step 1: Write the proportion equation
   131,538.56 : 181,480.16 = 80,498.07 : x
2. Step 2: Convert to fraction form
   131,538.56/181,480.16 = 80,498.07/x
3. Step 3: Cross multiply
   131,538.56x = 181,480.16 × 80,498.07
4. Step 4: Simplify right side
   131,538.56x = 14,608,802,824.54
5. Step 5: Solve for x
   x = 14,608,802,824.54/131,538.56
6. Step 6: Final answer
   x = 111,061.00