Finding the Fourth Proportional to 115,902.90, 173,811.15 and 80,738.10

Step by Step Solution

1. Step 1: Write the proportion equation
   115,902.90 : 173,811.15 = 80,738.10 : x
2. Step 2: Convert to fraction form
   115,902.90/173,811.15 = 80,738.10/x
3. Step 3: Cross multiply
   115,902.90x = 173,811.15 × 80,738.10
4. Step 4: Simplify right side
   115,902.90x = 14,033,182,009.82
5. Step 5: Solve for x
   x = 14,033,182,009.82/115,902.90
6. Step 6: Final answer
   x = 121,077.06