Finding the Fourth Proportional to 80,111.46, 120,156.76 and 20,951.70

Step by Step Solution

1. Step 1: Write the proportion equation
   80,111.46 : 120,156.76 = 20,951.70 : x
2. Step 2: Convert to fraction form
   80,111.46/120,156.76 = 20,951.70/x
3. Step 3: Cross multiply
   80,111.46x = 120,156.76 × 20,951.70
4. Step 4: Simplify right side
   80,111.46x = 2,517,488,388.49
5. Step 5: Solve for x
   x = 2,517,488,388.49/80,111.46
6. Step 6: Final answer
   x = 31,424.82