Finding the Fourth Proportional to 57,510.61, 79,359.05 and 42,411.40

Step by Step Solution

1. Step 1: Write the proportion equation
   57,510.61 : 79,359.05 = 42,411.40 : x
2. Step 2: Convert to fraction form
   57,510.61/79,359.05 = 42,411.40/x
3. Step 3: Cross multiply
   57,510.61x = 79,359.05 × 42,411.40
4. Step 4: Simplify right side
   57,510.61x = 3,365,728,320.80
5. Step 5: Solve for x
   x = 3,365,728,320.80/57,510.61
6. Step 6: Final answer
   x = 58,523.61