Finding the Fourth Proportional to 663,441.30, 995,291.55 and 264,014.10

Step by Step Solution

1. Step 1: Write the proportion equation
   663,441.30 : 995,291.55 = 264,014.10 : x
2. Step 2: Convert to fraction form
   663,441.30/995,291.55 = 264,014.10/x
3. Step 3: Cross multiply
   663,441.30x = 995,291.55 × 264,014.10
4. Step 4: Simplify right side
   663,441.30x = 262,771,002,810.86
5. Step 5: Solve for x
   x = 262,771,002,810.86/663,441.30
6. Step 6: Final answer
   x = 396,072.72