Finding the Fourth Proportional to 208,949.94, 288,356.76 and 122,915.34

Step by Step Solution

1. Step 1: Write the proportion equation
   208,949.94 : 288,356.76 = 122,915.34 : x
2. Step 2: Convert to fraction form
   208,949.94/288,356.76 = 122,915.34/x
3. Step 3: Cross multiply
   208,949.94x = 288,356.76 × 122,915.34
4. Step 4: Simplify right side
   208,949.94x = 35,443,469,196.70
5. Step 5: Solve for x
   x = 35,443,469,196.70/208,949.94
6. Step 6: Final answer
   x = 169,626.61