Finding the Fourth Proportional to 89.63, 134.18 and 59.18

Step by Step Solution

1. Step 1: Write the proportion equation
   89.63 : 134.18 = 59.18 : x
2. Step 2: Convert to fraction form
   89.63/134.18 = 59.18/x
3. Step 3: Cross multiply
   89.63x = 134.18 × 59.18
4. Step 4: Simplify right side
   89.63x = 7,939.81
5. Step 5: Solve for x
   x = 7,939.81/89.63
6. Step 6: Final answer
   x = 88.59