Finding the Fourth Proportional to 89,245.53, 123,242.18 and 57,470.31

Step by Step Solution

1. Step 1: Write the proportion equation
   89,245.53 : 123,242.18 = 57,470.31 : x
2. Step 2: Convert to fraction form
   89,245.53/123,242.18 = 57,470.31/x
3. Step 3: Cross multiply
   89,245.53x = 123,242.18 × 57,470.31
4. Step 4: Simplify right side
   89,245.53x = 7,082,766,002.32
5. Step 5: Solve for x
   x = 7,082,766,002.32/89,245.53
6. Step 6: Final answer
   x = 79,362.70