Finding the Fourth Proportional to 660,626.01, 990,959.57 and 314,333.61

Step by Step Solution

1. Step 1: Write the proportion equation
   660,626.01 : 990,959.57 = 314,333.61 : x
2. Step 2: Convert to fraction form
   660,626.01/990,959.57 = 314,333.61/x
3. Step 3: Cross multiply
   660,626.01x = 990,959.57 × 314,333.61
4. Step 4: Simplify right side
   660,626.01x = 311,491,899,002.15
5. Step 5: Solve for x
   x = 311,491,899,002.15/660,626.01
6. Step 6: Final answer
   x = 471,510.20