Finding the Fourth Proportional to 665,300.69, 918,115.29 and 359,377.06

Step by Step Solution

1. Step 1: Write the proportion equation
   665,300.69 : 918,115.29 = 359,377.06 : x
2. Step 2: Convert to fraction form
   665,300.69/918,115.29 = 359,377.06/x
3. Step 3: Cross multiply
   665,300.69x = 918,115.29 × 359,377.06
4. Step 4: Simplify right side
   665,300.69x = 329,949,573,661.25
5. Step 5: Solve for x
   x = 329,949,573,661.25/665,300.69
6. Step 6: Final answer
   x = 495,940.53