Finding the Fourth Proportional to 693,155.03, 1,039,831.72 and 213,423.42

Step by Step Solution

1. Step 1: Write the proportion equation
   693,155.03 : 1,039,831.72 = 213,423.42 : x
2. Step 2: Convert to fraction form
   693,155.03/1,039,831.72 = 213,423.42/x
3. Step 3: Cross multiply
   693,155.03x = 1,039,831.72 × 213,423.42
4. Step 4: Simplify right side
   693,155.03x = 221,924,441,906.88
5. Step 5: Solve for x
   x = 221,924,441,906.88/693,155.03
6. Step 6: Final answer
   x = 320,165.67