Finding the Fourth Proportional to 40,144.28, 55,399.55 and 22,239.56

Step by Step Solution

1. Step 1: Write the proportion equation
   40,144.28 : 55,399.55 = 22,239.56 : x
2. Step 2: Convert to fraction form
   40,144.28/55,399.55 = 22,239.56/x
3. Step 3: Cross multiply
   40,144.28x = 55,399.55 × 22,239.56
4. Step 4: Simplify right side
   40,144.28x = 1,232,061,643.50
5. Step 5: Solve for x
   x = 1,232,061,643.50/40,144.28
6. Step 6: Final answer
   x = 30,690.84