Finding the Fourth Proportional to 72.52, 99.98 and 50.68

Step by Step Solution

1. Step 1: Write the proportion equation
   72.52 : 99.98 = 50.68 : x
2. Step 2: Convert to fraction form
   72.52/99.98 = 50.68/x
3. Step 3: Cross multiply
   72.52x = 99.98 × 50.68
4. Step 4: Simplify right side
   72.52x = 5,066.99
5. Step 5: Solve for x
   x = 5,066.99/72.52
6. Step 6: Final answer
   x = 69.87