Finding the Fourth Proportional to 89.10, 122.01 and 88.83

Step by Step Solution

1. Step 1: Write the proportion equation
   89.10 : 122.01 = 88.83 : x
2. Step 2: Convert to fraction form
   89.10/122.01 = 88.83/x
3. Step 3: Cross multiply
   89.10x = 122.01 × 88.83
4. Step 4: Simplify right side
   89.10x = 10,838.15
5. Step 5: Solve for x
   x = 10,838.15/89.10
6. Step 6: Final answer
   x = 121.64