Finding the Fourth Proportional to 131,559.65, 181,635.33 and 91,259.31

Step by Step Solution

1. Step 1: Write the proportion equation
   131,559.65 : 181,635.33 = 91,259.31 : x
2. Step 2: Convert to fraction form
   131,559.65/181,635.33 = 91,259.31/x
3. Step 3: Cross multiply
   131,559.65x = 181,635.33 × 91,259.31
4. Step 4: Simplify right side
   131,559.65x = 16,575,914,887.42
5. Step 5: Solve for x
   x = 16,575,914,887.42/131,559.65
6. Step 6: Final answer
   x = 125,995.43