Finding the Fourth Proportional to 57,568.55, 79,439.20 and 42,469.61

Step by Step Solution

1. Step 1: Write the proportion equation
   57,568.55 : 79,439.20 = 42,469.61 : x
2. Step 2: Convert to fraction form
   57,568.55/79,439.20 = 42,469.61/x
3. Step 3: Cross multiply
   57,568.55x = 79,439.20 × 42,469.61
4. Step 4: Simplify right side
   57,568.55x = 3,373,751,339.34
5. Step 5: Solve for x
   x = 3,373,751,339.34/57,568.55
6. Step 6: Final answer
   x = 58,604.08