Finding the Fourth Proportional to 142,119.55, 213,179.31 and 42,281.17

Step by Step Solution

1. Step 1: Write the proportion equation
   142,119.55 : 213,179.31 = 42,281.17 : x
2. Step 2: Convert to fraction form
   142,119.55/213,179.31 = 42,281.17/x
3. Step 3: Cross multiply
   142,119.55x = 213,179.31 × 42,281.17
4. Step 4: Simplify right side
   142,119.55x = 9,013,470,646.59
5. Step 5: Solve for x
   x = 9,013,470,646.59/142,119.55
6. Step 6: Final answer
   x = 63,421.75