Finding the Fourth Proportional to 142,002.40, 213,033.84 and 42,162.88

Step by Step Solution

1. Step 1: Write the proportion equation
   142,002.40 : 213,033.84 = 42,162.88 : x
2. Step 2: Convert to fraction form
   142,002.40/213,033.84 = 42,162.88/x
3. Step 3: Cross multiply
   142,002.40x = 213,033.84 × 42,162.88
4. Step 4: Simplify right side
   142,002.40x = 8,982,120,231.86
5. Step 5: Solve for x
   x = 8,982,120,231.86/142,002.40
6. Step 6: Final answer
   x = 63,253.30