Finding the Fourth Proportional to 89.75, 123.86 and 60.71

Step by Step Solution

1. Step 1: Write the proportion equation
   89.75 : 123.86 = 60.71 : x
2. Step 2: Convert to fraction form
   89.75/123.86 = 60.71/x
3. Step 3: Cross multiply
   89.75x = 123.86 × 60.71
4. Step 4: Simplify right side
   89.75x = 7,519.54
5. Step 5: Solve for x
   x = 7,519.54/89.75
6. Step 6: Final answer
   x = 83.78