Finding the Fourth Proportional to 89.58, 123.68 and 60.12

Step by Step Solution

1. Step 1: Write the proportion equation
   89.58 : 123.68 = 60.12 : x
2. Step 2: Convert to fraction form
   89.58/123.68 = 60.12/x
3. Step 3: Cross multiply
   89.58x = 123.68 × 60.12
4. Step 4: Simplify right side
   89.58x = 7,434.72
5. Step 5: Solve for x
   x = 7,434.72/89.58
6. Step 6: Final answer
   x = 83.00