Finding the Fourth Proportional to 89,463.45, 123,471.24 and 57,724.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,463.45 : 123,471.24 = 57,724.68 : x
2. Step 2: Convert to fraction form
   89,463.45/123,471.24 = 57,724.68/x
3. Step 3: Cross multiply
   89,463.45x = 123,471.24 × 57,724.68
4. Step 4: Simplify right side
   89,463.45x = 7,127,337,818.20
5. Step 5: Solve for x
   x = 7,127,337,818.20/89,463.45
6. Step 6: Final answer
   x = 79,667.59