Finding the Fourth Proportional to 89.33, 123.28 and 61.67

Step by Step Solution

1. Step 1: Write the proportion equation
   89.33 : 123.28 = 61.67 : x
2. Step 2: Convert to fraction form
   89.33/123.28 = 61.67/x
3. Step 3: Cross multiply
   89.33x = 123.28 × 61.67
4. Step 4: Simplify right side
   89.33x = 7,602.83
5. Step 5: Solve for x
   x = 7,602.83/89.33
6. Step 6: Final answer
   x = 85.11