Finding the Fourth Proportional to 67.10, 100.65 and 49.98

Step by Step Solution

1. Step 1: Write the proportion equation
   67.10 : 100.65 = 49.98 : x
2. Step 2: Convert to fraction form
   67.10/100.65 = 49.98/x
3. Step 3: Cross multiply
   67.10x = 100.65 × 49.98
4. Step 4: Simplify right side
   67.10x = 5,030.49
5. Step 5: Solve for x
   x = 5,030.49/67.10
6. Step 6: Final answer
   x = 74.97