Finding the Fourth Proportional to 89,589.28, 123,607.56 and 57,776.44

Step by Step Solution

1. Step 1: Write the proportion equation
   89,589.28 : 123,607.56 = 57,776.44 : x
2. Step 2: Convert to fraction form
   89,589.28/123,607.56 = 57,776.44/x
3. Step 3: Cross multiply
   89,589.28x = 123,607.56 × 57,776.44
4. Step 4: Simplify right side
   89,589.28x = 7,141,604,773.89
5. Step 5: Solve for x
   x = 7,141,604,773.89/89,589.28
6. Step 6: Final answer
   x = 79,714.95