Finding the Fourth Proportional to 424,443.12, 585,814.72 and 243,276.49

Step by Step Solution

1. Step 1: Write the proportion equation
   424,443.12 : 585,814.72 = 243,276.49 : x
2. Step 2: Convert to fraction form
   424,443.12/585,814.72 = 243,276.49/x
3. Step 3: Cross multiply
   424,443.12x = 585,814.72 × 243,276.49
4. Step 4: Simplify right side
   424,443.12x = 142,514,948,871.93
5. Step 5: Solve for x
   x = 142,514,948,871.93/424,443.12
6. Step 6: Final answer
   x = 335,769.25