Finding the Fourth Proportional to 89.19, 123.06 and 65.82

Step by Step Solution

1. Step 1: Write the proportion equation
   89.19 : 123.06 = 65.82 : x
2. Step 2: Convert to fraction form
   89.19/123.06 = 65.82/x
3. Step 3: Cross multiply
   89.19x = 123.06 × 65.82
4. Step 4: Simplify right side
   89.19x = 8,099.81
5. Step 5: Solve for x
   x = 8,099.81/89.19
6. Step 6: Final answer
   x = 90.82