Finding the Fourth Proportional to 64,584.57, 89,170.17 and 57,757.41

Step by Step Solution

1. Step 1: Write the proportion equation
   64,584.57 : 89,170.17 = 57,757.41 : x
2. Step 2: Convert to fraction form
   64,584.57/89,170.17 = 57,757.41/x
3. Step 3: Cross multiply
   64,584.57x = 89,170.17 × 57,757.41
4. Step 4: Simplify right side
   64,584.57x = 5,150,238,068.46
5. Step 5: Solve for x
   x = 5,150,238,068.46/64,584.57
6. Step 6: Final answer
   x = 79,744.09