Finding the Fourth Proportional to 89,562.20, 123,574.56 and 57,693.56

Step by Step Solution

1. Step 1: Write the proportion equation
   89,562.20 : 123,574.56 = 57,693.56 : x
2. Step 2: Convert to fraction form
   89,562.20/123,574.56 = 57,693.56/x
3. Step 3: Cross multiply
   89,562.20x = 123,574.56 × 57,693.56
4. Step 4: Simplify right side
   89,562.20x = 7,129,456,291.83
5. Step 5: Solve for x
   x = 7,129,456,291.83/89,562.20
6. Step 6: Final answer
   x = 79,603.41