Finding the Fourth Proportional to 278,214.72, 383,936.79 and 150,890.42

Step by Step Solution

1. Step 1: Write the proportion equation
   278,214.72 : 383,936.79 = 150,890.42 : x
2. Step 2: Convert to fraction form
   278,214.72/383,936.79 = 150,890.42/x
3. Step 3: Cross multiply
   278,214.72x = 383,936.79 × 150,890.42
4. Step 4: Simplify right side
   278,214.72x = 57,932,383,496.55
5. Step 5: Solve for x
   x = 57,932,383,496.55/278,214.72
6. Step 6: Final answer
   x = 208,229.04