Finding the Fourth Proportional to 85,404.96, 128,113.56 and 24,612.75

Step by Step Solution

1. Step 1: Write the proportion equation
   85,404.96 : 128,113.56 = 24,612.75 : x
2. Step 2: Convert to fraction form
   85,404.96/128,113.56 = 24,612.75/x
3. Step 3: Cross multiply
   85,404.96x = 128,113.56 × 24,612.75
4. Step 4: Simplify right side
   85,404.96x = 3,153,227,023.89
5. Step 5: Solve for x
   x = 3,153,227,023.89/85,404.96
6. Step 6: Final answer
   x = 36,920.89