Finding the Fourth Proportional to 89.58, 123.64 and 60.42

Step by Step Solution

1. Step 1: Write the proportion equation
   89.58 : 123.64 = 60.42 : x
2. Step 2: Convert to fraction form
   89.58/123.64 = 60.42/x
3. Step 3: Cross multiply
   89.58x = 123.64 × 60.42
4. Step 4: Simplify right side
   89.58x = 7,470.33
5. Step 5: Solve for x
   x = 7,470.33/89.58
6. Step 6: Final answer
   x = 83.39