Finding the Fourth Proportional to 89.79, 134.34 and 59.39

Step by Step Solution

1. Step 1: Write the proportion equation
   89.79 : 134.34 = 59.39 : x
2. Step 2: Convert to fraction form
   89.79/134.34 = 59.39/x
3. Step 3: Cross multiply
   89.79x = 134.34 × 59.39
4. Step 4: Simplify right side
   89.79x = 7,978.45
5. Step 5: Solve for x
   x = 7,978.45/89.79
6. Step 6: Final answer
   x = 88.86