Finding the Fourth Proportional to 142,264.08, 213,391.53 and 42,425.10

Step by Step Solution

1. Step 1: Write the proportion equation
   142,264.08 : 213,391.53 = 42,425.10 : x
2. Step 2: Convert to fraction form
   142,264.08/213,391.53 = 42,425.10/x
3. Step 3: Cross multiply
   142,264.08x = 213,391.53 × 42,425.10
4. Step 4: Simplify right side
   142,264.08x = 9,053,156,999.40
5. Step 5: Solve for x
   x = 9,053,156,999.40/142,264.08
6. Step 6: Final answer
   x = 63,636.28