Finding the Fourth Proportional to 150.52, 225.69 and 78.28

Step by Step Solution

1. Step 1: Write the proportion equation
   150.52 : 225.69 = 78.28 : x
2. Step 2: Convert to fraction form
   150.52/225.69 = 78.28/x
3. Step 3: Cross multiply
   150.52x = 225.69 × 78.28
4. Step 4: Simplify right side
   150.52x = 17,667.01
5. Step 5: Solve for x
   x = 17,667.01/150.52
6. Step 6: Final answer
   x = 117.37