Finding the Fourth Proportional to 472,942.38, 709,693.98 and 443,019.42

Step by Step Solution

1. Step 1: Write the proportion equation
   472,942.38 : 709,693.98 = 443,019.42 : x
2. Step 2: Convert to fraction form
   472,942.38/709,693.98 = 443,019.42/x
3. Step 3: Cross multiply
   472,942.38x = 709,693.98 × 443,019.42
4. Step 4: Simplify right side
   472,942.38x = 314,408,215,397.09
5. Step 5: Solve for x
   x = 314,408,215,397.09/472,942.38
6. Step 6: Final answer
   x = 664,791.80