Finding the Fourth Proportional to 567,498.21, 783,142.38 and 312,849.39

Step by Step Solution

1. Step 1: Write the proportion equation
   567,498.21 : 783,142.38 = 312,849.39 : x
2. Step 2: Convert to fraction form
   567,498.21/783,142.38 = 312,849.39/x
3. Step 3: Cross multiply
   567,498.21x = 783,142.38 × 312,849.39
4. Step 4: Simplify right side
   567,498.21x = 245,005,615,866.15
5. Step 5: Solve for x
   x = 245,005,615,866.15/567,498.21
6. Step 6: Final answer
   x = 431,729.32