Finding the Fourth Proportional to 79.82, 110.16 and 50.72

Step by Step Solution

1. Step 1: Write the proportion equation
   79.82 : 110.16 = 50.72 : x
2. Step 2: Convert to fraction form
   79.82/110.16 = 50.72/x
3. Step 3: Cross multiply
   79.82x = 110.16 × 50.72
4. Step 4: Simplify right side
   79.82x = 5,587.32
5. Step 5: Solve for x
   x = 5,587.32/79.82
6. Step 6: Final answer
   x = 70.00