Finding the Fourth Proportional to 91.71, 137.33 and 59.16

Step by Step Solution

1. Step 1: Write the proportion equation
   91.71 : 137.33 = 59.16 : x
2. Step 2: Convert to fraction form
   91.71/137.33 = 59.16/x
3. Step 3: Cross multiply
   91.71x = 137.33 × 59.16
4. Step 4: Simplify right side
   91.71x = 8,124.15
5. Step 5: Solve for x
   x = 8,124.15/91.71
6. Step 6: Final answer
   x = 88.59