Finding the Fourth Proportional to 89,449.95, 123,452.61 and 57,711.18

Step by Step Solution

1. Step 1: Write the proportion equation
   89,449.95 : 123,452.61 = 57,711.18 : x
2. Step 2: Convert to fraction form
   89,449.95/123,452.61 = 57,711.18/x
3. Step 3: Cross multiply
   89,449.95x = 123,452.61 × 57,711.18
4. Step 4: Simplify right side
   89,449.95x = 7,124,595,797.18
5. Step 5: Solve for x
   x = 7,124,595,797.18/89,449.95
6. Step 6: Final answer
   x = 79,648.96