Finding the Fourth Proportional to 89.09, 123.06 and 82.61

Step by Step Solution

1. Step 1: Write the proportion equation
   89.09 : 123.06 = 82.61 : x
2. Step 2: Convert to fraction form
   89.09/123.06 = 82.61/x
3. Step 3: Cross multiply
   89.09x = 123.06 × 82.61
4. Step 4: Simplify right side
   89.09x = 10,165.37
5. Step 5: Solve for x
   x = 10,165.37/89.09
6. Step 6: Final answer
   x = 114.11