Finding the Fourth Proportional to 418,908.57, 578,076.56 and 227,922.72

Step by Step Solution

1. Step 1: Write the proportion equation
   418,908.57 : 578,076.56 = 227,922.72 : x
2. Step 2: Convert to fraction form
   418,908.57/578,076.56 = 227,922.72/x
3. Step 3: Cross multiply
   418,908.57x = 578,076.56 × 227,922.72
4. Step 4: Simplify right side
   418,908.57x = 131,756,782,722.43
5. Step 5: Solve for x
   x = 131,756,782,722.43/418,908.57
6. Step 6: Final answer
   x = 314,523.96