Finding the Fourth Proportional to 142,118.55, 213,177.81 and 42,280.17

Step by Step Solution

1. Step 1: Write the proportion equation
   142,118.55 : 213,177.81 = 42,280.17 : x
2. Step 2: Convert to fraction form
   142,118.55/213,177.81 = 42,280.17/x
3. Step 3: Cross multiply
   142,118.55x = 213,177.81 × 42,280.17
4. Step 4: Simplify right side
   142,118.55x = 9,013,194,047.03
5. Step 5: Solve for x
   x = 9,013,194,047.03/142,118.55
6. Step 6: Final answer
   x = 63,420.25