Finding the Fourth Proportional to 67.05, 100.69 and 49.87

Step by Step Solution

1. Step 1: Write the proportion equation
   67.05 : 100.69 = 49.87 : x
2. Step 2: Convert to fraction form
   67.05/100.69 = 49.87/x
3. Step 3: Cross multiply
   67.05x = 100.69 × 49.87
4. Step 4: Simplify right side
   67.05x = 5,021.76
5. Step 5: Solve for x
   x = 5,021.76/67.05
6. Step 6: Final answer
   x = 74.89