Finding the Fourth Proportional to 89.06, 122.88 and 59.94

Step by Step Solution

1. Step 1: Write the proportion equation
   89.06 : 122.88 = 59.94 : x
2. Step 2: Convert to fraction form
   89.06/122.88 = 59.94/x
3. Step 3: Cross multiply
   89.06x = 122.88 × 59.94
4. Step 4: Simplify right side
   89.06x = 7,365.43
5. Step 5: Solve for x
   x = 7,365.43/89.06
6. Step 6: Final answer
   x = 82.70