Finding the Fourth Proportional to 404,626.10, 606,939.15 and 271,570.10

Step by Step Solution

1. Step 1: Write the proportion equation
   404,626.10 : 606,939.15 = 271,570.10 : x
2. Step 2: Convert to fraction form
   404,626.10/606,939.15 = 271,570.10/x
3. Step 3: Cross multiply
   404,626.10x = 606,939.15 × 271,570.10
4. Step 4: Simplify right side
   404,626.10x = 164,826,525,659.42
5. Step 5: Solve for x
   x = 164,826,525,659.42/404,626.10
6. Step 6: Final answer
   x = 407,355.15