Finding the Fourth Proportional to 67.23, 100.71 and 45.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67.23 : 100.71 = 45.50 : x
2. Step 2: Convert to fraction form
   67.23/100.71 = 45.50/x
3. Step 3: Cross multiply
   67.23x = 100.71 × 45.50
4. Step 4: Simplify right side
   67.23x = 4,582.31
5. Step 5: Solve for x
   x = 4,582.31/67.23
6. Step 6: Final answer
   x = 68.16