Finding the Fourth Proportional to 67.24, 100.72 and 61.98

Step by Step Solution

1. Step 1: Write the proportion equation
   67.24 : 100.72 = 61.98 : x
2. Step 2: Convert to fraction form
   67.24/100.72 = 61.98/x
3. Step 3: Cross multiply
   67.24x = 100.72 × 61.98
4. Step 4: Simplify right side
   67.24x = 6,242.63
5. Step 5: Solve for x
   x = 6,242.63/67.24
6. Step 6: Final answer
   x = 92.84