Finding the Fourth Proportional to 567,234, 782,773.20 and 309,113.33

Step by Step Solution

1. Step 1: Write the proportion equation
   567,234 : 782,773.20 = 309,113.33 : x
2. Step 2: Convert to fraction form
   567,234/782,773.20 = 309,113.33/x
3. Step 3: Cross multiply
   567,234x = 782,773.20 × 309,113.33
4. Step 4: Simplify right side
   567,234x = 241,965,626,572.89
5. Step 5: Solve for x
   x = 241,965,626,572.89/567,234
6. Step 6: Final answer
   x = 426,571.09