Finding the Fourth Proportional to 88,138.09, 131,914.78 and 80,258.82

Step by Step Solution

1. Step 1: Write the proportion equation
   88,138.09 : 131,914.78 = 80,258.82 : x
2. Step 2: Convert to fraction form
   88,138.09/131,914.78 = 80,258.82/x
3. Step 3: Cross multiply
   88,138.09x = 131,914.78 × 80,258.82
4. Step 4: Simplify right side
   88,138.09x = 10,587,323,888.03
5. Step 5: Solve for x
   x = 10,587,323,888.03/88,138.09
6. Step 6: Final answer
   x = 120,122.00