Finding the Fourth Proportional to 88,488.18, 122,016.78 and 80,090.10

Step by Step Solution

1. Step 1: Write the proportion equation
   88,488.18 : 122,016.78 = 80,090.10 : x
2. Step 2: Convert to fraction form
   88,488.18/122,016.78 = 80,090.10/x
3. Step 3: Cross multiply
   88,488.18x = 122,016.78 × 80,090.10
4. Step 4: Simplify right side
   88,488.18x = 9,772,336,111.88
5. Step 5: Solve for x
   x = 9,772,336,111.88/88,488.18
6. Step 6: Final answer
   x = 110,436.63