Finding the Fourth Proportional to 278,297.28, 383,922.72 and 165,078.72

Step by Step Solution

1. Step 1: Write the proportion equation
   278,297.28 : 383,922.72 = 165,078.72 : x
2. Step 2: Convert to fraction form
   278,297.28/383,922.72 = 165,078.72/x
3. Step 3: Cross multiply
   278,297.28x = 383,922.72 × 165,078.72
4. Step 4: Simplify right side
   278,297.28x = 63,377,471,196.52
5. Step 5: Solve for x
   x = 63,377,471,196.52/278,297.28
6. Step 6: Final answer
   x = 227,732.99