Finding the Fourth Proportional to 89,139.98, 122,942.31 and 75,755.54

Step by Step Solution

1. Step 1: Write the proportion equation
   89,139.98 : 122,942.31 = 75,755.54 : x
2. Step 2: Convert to fraction form
   89,139.98/122,942.31 = 75,755.54/x
3. Step 3: Cross multiply
   89,139.98x = 122,942.31 × 75,755.54
4. Step 4: Simplify right side
   89,139.98x = 9,313,561,082.90
5. Step 5: Solve for x
   x = 9,313,561,082.90/89,139.98
6. Step 6: Final answer
   x = 104,482.42