Finding the Fourth Proportional to 72.48, 100.06 and 50.68

Step by Step Solution

1. Step 1: Write the proportion equation
   72.48 : 100.06 = 50.68 : x
2. Step 2: Convert to fraction form
   72.48/100.06 = 50.68/x
3. Step 3: Cross multiply
   72.48x = 100.06 × 50.68
4. Step 4: Simplify right side
   72.48x = 5,071.04
5. Step 5: Solve for x
   x = 5,071.04/72.48
6. Step 6: Final answer
   x = 69.96