Finding the Fourth Proportional to 768,874.59, 1,061,042.72 and 424,734.21

Step by Step Solution

1. Step 1: Write the proportion equation
   768,874.59 : 1,061,042.72 = 424,734.21 : x
2. Step 2: Convert to fraction form
   768,874.59/1,061,042.72 = 424,734.21/x
3. Step 3: Cross multiply
   768,874.59x = 1,061,042.72 × 424,734.21
4. Step 4: Simplify right side
   768,874.59x = 450,661,139,331.78
5. Step 5: Solve for x
   x = 450,661,139,331.78/768,874.59
6. Step 6: Final answer
   x = 586,130.88