Finding the Fourth Proportional to 661,697.76, 913,145.52 and 359,892.96

Step by Step Solution

1. Step 1: Write the proportion equation
   661,697.76 : 913,145.52 = 359,892.96 : x
2. Step 2: Convert to fraction form
   661,697.76/913,145.52 = 359,892.96/x
3. Step 3: Cross multiply
   661,697.76x = 913,145.52 × 359,892.96
4. Step 4: Simplify right side
   661,697.76x = 328,634,644,103.54
5. Step 5: Solve for x
   x = 328,634,644,103.54/661,697.76
6. Step 6: Final answer
   x = 496,653.71