Finding the Fourth Proportional to 89,353.20, 123,290.24 and 57,104.66

Step by Step Solution

1. Step 1: Write the proportion equation
   89,353.20 : 123,290.24 = 57,104.66 : x
2. Step 2: Convert to fraction form
   89,353.20/123,290.24 = 57,104.66/x
3. Step 3: Cross multiply
   89,353.20x = 123,290.24 × 57,104.66
4. Step 4: Simplify right side
   89,353.20x = 7,040,447,236.52
5. Step 5: Solve for x
   x = 7,040,447,236.52/89,353.20
6. Step 6: Final answer
   x = 78,793.45