Finding the Fourth Proportional to 115,912.90, 173,826.15 and 80,748.10

Step by Step Solution

1. Step 1: Write the proportion equation
   115,912.90 : 173,826.15 = 80,748.10 : x
2. Step 2: Convert to fraction form
   115,912.90/173,826.15 = 80,748.10/x
3. Step 3: Cross multiply
   115,912.90x = 173,826.15 × 80,748.10
4. Step 4: Simplify right side
   115,912.90x = 14,036,131,342.82
5. Step 5: Solve for x
   x = 14,036,131,342.82/115,912.90
6. Step 6: Final answer
   x = 121,092.06