Finding the Fourth Proportional to 89,355.60, 123,338.41 and 57,524.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,355.60 : 123,338.41 = 57,524.50 : x
2. Step 2: Convert to fraction form
   89,355.60/123,338.41 = 57,524.50/x
3. Step 3: Cross multiply
   89,355.60x = 123,338.41 × 57,524.50
4. Step 4: Simplify right side
   89,355.60x = 7,094,980,366.05
5. Step 5: Solve for x
   x = 7,094,980,366.05/89,355.60
6. Step 6: Final answer
   x = 79,401.63