Finding the Fourth Proportional to 665,300.95, 918,115.69 and 359,377.34

Step by Step Solution

1. Step 1: Write the proportion equation
   665,300.95 : 918,115.69 = 359,377.34 : x
2. Step 2: Convert to fraction form
   665,300.95/918,115.69 = 359,377.34/x
3. Step 3: Cross multiply
   665,300.95x = 918,115.69 × 359,377.34
4. Step 4: Simplify right side
   665,300.95x = 329,949,973,822.93
5. Step 5: Solve for x
   x = 329,949,973,822.93/665,300.95
6. Step 6: Final answer
   x = 495,940.93