Finding the Fourth Proportional to 283,061.10, 424,241.73 and 142,743.18

Step by Step Solution

1. Step 1: Write the proportion equation
   283,061.10 : 424,241.73 = 142,743.18 : x
2. Step 2: Convert to fraction form
   283,061.10/424,241.73 = 142,743.18/x
3. Step 3: Cross multiply
   283,061.10x = 424,241.73 × 142,743.18
4. Step 4: Simplify right side
   283,061.10x = 60,557,613,628.90
5. Step 5: Solve for x
   x = 60,557,613,628.90/283,061.10
6. Step 6: Final answer
   x = 213,938.31