Finding the Fourth Proportional to 89.40, 134.10 and 59.00

Step by Step Solution

1. Step 1: Write the proportion equation
   89.40 : 134.10 = 59.00 : x
2. Step 2: Convert to fraction form
   89.40/134.10 = 59.00/x
3. Step 3: Cross multiply
   89.40x = 134.10 × 59.00
4. Step 4: Simplify right side
   89.40x = 7,910.93
5. Step 5: Solve for x
   x = 7,910.93/89.40
6. Step 6: Final answer
   x = 88.49