Finding the Fourth Proportional to 100.79, 151.18 and 52.79

Step by Step Solution

1. Step 1: Write the proportion equation
   100.79 : 151.18 = 52.79 : x
2. Step 2: Convert to fraction form
   100.79/151.18 = 52.79/x
3. Step 3: Cross multiply
   100.79x = 151.18 × 52.79
4. Step 4: Simplify right side
   100.79x = 7,979.90
5. Step 5: Solve for x
   x = 7,979.90/100.79
6. Step 6: Final answer
   x = 79.18