Finding the Fourth Proportional to 297,498.88, 408,031.36 and 263,906.56

Step by Step Solution

1. Step 1: Write the proportion equation
   297,498.88 : 408,031.36 = 263,906.56 : x
2. Step 2: Convert to fraction form
   297,498.88/408,031.36 = 263,906.56/x
3. Step 3: Cross multiply
   297,498.88x = 408,031.36 × 263,906.56
4. Step 4: Simplify right side
   297,498.88x = 107,682,152,589.72
5. Step 5: Solve for x
   x = 107,682,152,589.72/297,498.88
6. Step 6: Final answer
   x = 361,958.18