Finding the Fourth Proportional to 284,824.10, 426,862.38 and 209,591.98

Step by Step Solution

1. Step 1: Write the proportion equation
   284,824.10 : 426,862.38 = 209,591.98 : x
2. Step 2: Convert to fraction form
   284,824.10/426,862.38 = 209,591.98/x
3. Step 3: Cross multiply
   284,824.10x = 426,862.38 × 209,591.98
4. Step 4: Simplify right side
   284,824.10x = 89,466,931,411.71
5. Step 5: Solve for x
   x = 89,466,931,411.71/284,824.10
6. Step 6: Final answer
   x = 314,112.93