Finding the Fourth Proportional to 200,680.18, 276,951.10 and 111,256.18

Step by Step Solution

1. Step 1: Write the proportion equation
   200,680.18 : 276,951.10 = 111,256.18 : x
2. Step 2: Convert to fraction form
   200,680.18/276,951.10 = 111,256.18/x
3. Step 3: Cross multiply
   200,680.18x = 276,951.10 × 111,256.18
4. Step 4: Simplify right side
   200,680.18x = 30,812,521,432.80
5. Step 5: Solve for x
   x = 30,812,521,432.80/200,680.18
6. Step 6: Final answer
   x = 153,540.43