Finding the Fourth Proportional to 404,662.64, 558,648.53 and 261,504.35

Step by Step Solution

1. Step 1: Write the proportion equation
   404,662.64 : 558,648.53 = 261,504.35 : x
2. Step 2: Convert to fraction form
   404,662.64/558,648.53 = 261,504.35/x
3. Step 3: Cross multiply
   404,662.64x = 558,648.53 × 261,504.35
4. Step 4: Simplify right side
   404,662.64x = 146,089,019,690.91
5. Step 5: Solve for x
   x = 146,089,019,690.91/404,662.64
6. Step 6: Final answer
   x = 361,014.35