Finding the Fourth Proportional to 131,012.76, 180,826.76 and 83,256.78

Step by Step Solution

1. Step 1: Write the proportion equation
   131,012.76 : 180,826.76 = 83,256.78 : x
2. Step 2: Convert to fraction form
   131,012.76/180,826.76 = 83,256.78/x
3. Step 3: Cross multiply
   131,012.76x = 180,826.76 × 83,256.78
4. Step 4: Simplify right side
   131,012.76x = 15,055,053,775.43
5. Step 5: Solve for x
   x = 15,055,053,775.43/131,012.76
6. Step 6: Final answer
   x = 114,912.88