Finding the Fourth Proportional to 91.79, 137.69 and 37.67

Step by Step Solution

1. Step 1: Write the proportion equation
   91.79 : 137.69 = 37.67 : x
2. Step 2: Convert to fraction form
   91.79/137.69 = 37.67/x
3. Step 3: Cross multiply
   91.79x = 137.69 × 37.67
4. Step 4: Simplify right side
   91.79x = 5,185.91
5. Step 5: Solve for x
   x = 5,185.91/91.79
6. Step 6: Final answer
   x = 56.50