Finding the Fourth Proportional to 142,122.85, 213,147.15 and 42,256.15

Step by Step Solution

1. Step 1: Write the proportion equation
   142,122.85 : 213,147.15 = 42,256.15 : x
2. Step 2: Convert to fraction form
   142,122.85/213,147.15 = 42,256.15/x
3. Step 3: Cross multiply
   142,122.85x = 213,147.15 × 42,256.15
4. Step 4: Simplify right side
   142,122.85x = 9,006,777,942.47
5. Step 5: Solve for x
   x = 9,006,777,942.47/142,122.85
6. Step 6: Final answer
   x = 63,373.19