Finding the Fourth Proportional to 278,105.76, 383,757.54 and 170,680.32

Step by Step Solution

1. Step 1: Write the proportion equation
   278,105.76 : 383,757.54 = 170,680.32 : x
2. Step 2: Convert to fraction form
   278,105.76/383,757.54 = 170,680.32/x
3. Step 3: Cross multiply
   278,105.76x = 383,757.54 × 170,680.32
4. Step 4: Simplify right side
   278,105.76x = 65,499,859,729.61
5. Step 5: Solve for x
   x = 65,499,859,729.61/278,105.76
6. Step 6: Final answer
   x = 235,521.41