Finding the Fourth Proportional to 89.91, 134.73 and 59.00

Step by Step Solution

1. Step 1: Write the proportion equation
   89.91 : 134.73 = 59.00 : x
2. Step 2: Convert to fraction form
   89.91/134.73 = 59.00/x
3. Step 3: Cross multiply
   89.91x = 134.73 × 59.00
4. Step 4: Simplify right side
   89.91x = 7,948.40
5. Step 5: Solve for x
   x = 7,948.40/89.91
6. Step 6: Final answer
   x = 88.40