Finding the Fourth Proportional to 479,665.26, 661,920.72 and 264,800.72

Step by Step Solution

1. Step 1: Write the proportion equation
   479,665.26 : 661,920.72 = 264,800.72 : x
2. Step 2: Convert to fraction form
   479,665.26/661,920.72 = 264,800.72/x
3. Step 3: Cross multiply
   479,665.26x = 661,920.72 × 264,800.72
4. Step 4: Simplify right side
   479,665.26x = 175,277,083,238.92
5. Step 5: Solve for x
   x = 175,277,083,238.92/479,665.26
6. Step 6: Final answer
   x = 365,415.42