Finding the Fourth Proportional to 842,475.72, 1,264,834.62 and 443,396.76

Step by Step Solution

1. Step 1: Write the proportion equation
   842,475.72 : 1,264,834.62 = 443,396.76 : x
2. Step 2: Convert to fraction form
   842,475.72/1,264,834.62 = 443,396.76/x
3. Step 3: Cross multiply
   842,475.72x = 1,264,834.62 × 443,396.76
4. Step 4: Simplify right side
   842,475.72x = 560,823,572,443.83
5. Step 5: Solve for x
   x = 560,823,572,443.83/842,475.72
6. Step 6: Final answer
   x = 665,685.15