Finding the Fourth Proportional to 91.57, 137.31 and 33.76

Step by Step Solution

1. Step 1: Write the proportion equation
   91.57 : 137.31 = 33.76 : x
2. Step 2: Convert to fraction form
   91.57/137.31 = 33.76/x
3. Step 3: Cross multiply
   91.57x = 137.31 × 33.76
4. Step 4: Simplify right side
   91.57x = 4,635.59
5. Step 5: Solve for x
   x = 4,635.59/91.57
6. Step 6: Final answer
   x = 50.62