Finding the Fourth Proportional to 342,002.58, 512,727.12 and 142,472.85

Step by Step Solution

1. Step 1: Write the proportion equation
   342,002.58 : 512,727.12 = 142,472.85 : x
2. Step 2: Convert to fraction form
   342,002.58/512,727.12 = 142,472.85/x
3. Step 3: Cross multiply
   342,002.58x = 512,727.12 × 142,472.85
4. Step 4: Simplify right side
   342,002.58x = 73,049,694,058.69
5. Step 5: Solve for x
   x = 73,049,694,058.69/342,002.58
6. Step 6: Final answer
   x = 213,593.99