Finding the Fourth Proportional to 283,061.35, 424,242.10 and 142,743.43

Step by Step Solution

1. Step 1: Write the proportion equation
   283,061.35 : 424,242.10 = 142,743.43 : x
2. Step 2: Convert to fraction form
   283,061.35/424,242.10 = 142,743.43/x
3. Step 3: Cross multiply
   283,061.35x = 424,242.10 × 142,743.43
4. Step 4: Simplify right side
   283,061.35x = 60,557,772,504.40
5. Step 5: Solve for x
   x = 60,557,772,504.40/283,061.35
6. Step 6: Final answer
   x = 213,938.68