Finding the Fourth Proportional to 88.72, 133.10 and 59.94

Step by Step Solution

1. Step 1: Write the proportion equation
   88.72 : 133.10 = 59.94 : x
2. Step 2: Convert to fraction form
   88.72/133.10 = 59.94/x
3. Step 3: Cross multiply
   88.72x = 133.10 × 59.94
4. Step 4: Simplify right side
   88.72x = 7,978.01
5. Step 5: Solve for x
   x = 7,978.01/88.72
6. Step 6: Final answer
   x = 89.92