Finding the Fourth Proportional to 99,025.56, 148,183.50 and 85,744.38

Step by Step Solution

1. Step 1: Write the proportion equation
   99,025.56 : 148,183.50 = 85,744.38 : x
2. Step 2: Convert to fraction form
   99,025.56/148,183.50 = 85,744.38/x
3. Step 3: Cross multiply
   99,025.56x = 148,183.50 × 85,744.38
4. Step 4: Simplify right side
   99,025.56x = 12,705,902,333.73
5. Step 5: Solve for x
   x = 12,705,902,333.73/99,025.56
6. Step 6: Final answer
   x = 128,309.32