Finding the Fourth Proportional to 60,612, 83,727.12 and 57,659.04

Step by Step Solution

1. Step 1: Write the proportion equation
   60,612 : 83,727.12 = 57,659.04 : x
2. Step 2: Convert to fraction form
   60,612/83,727.12 = 57,659.04/x
3. Step 3: Cross multiply
   60,612x = 83,727.12 × 57,659.04
4. Step 4: Simplify right side
   60,612x = 4,827,625,361.16
5. Step 5: Solve for x
   x = 4,827,625,361.16/60,612
6. Step 6: Final answer
   x = 79,648.01