Finding the Fourth Proportional to 73.79, 110.72 and 49.69

Step by Step Solution

1. Step 1: Write the proportion equation
   73.79 : 110.72 = 49.69 : x
2. Step 2: Convert to fraction form
   73.79/110.72 = 49.69/x
3. Step 3: Cross multiply
   73.79x = 110.72 × 49.69
4. Step 4: Simplify right side
   73.79x = 5,501.15
5. Step 5: Solve for x
   x = 5,501.15/73.79
6. Step 6: Final answer
   x = 74.56