Finding the Fourth Proportional to 72.96, 109.23 and 50.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72.96 : 109.23 = 50.16 : x
2. Step 2: Convert to fraction form
   72.96/109.23 = 50.16/x
3. Step 3: Cross multiply
   72.96x = 109.23 × 50.16
4. Step 4: Simplify right side
   72.96x = 5,478.98
5. Step 5: Solve for x
   x = 5,478.98/72.96
6. Step 6: Final answer
   x = 75.10