Finding the Fourth Proportional to 40,109.10, 55,351.21 and 21,959.52

Step by Step Solution

1. Step 1: Write the proportion equation
   40,109.10 : 55,351.21 = 21,959.52 : x
2. Step 2: Convert to fraction form
   40,109.10/55,351.21 = 21,959.52/x
3. Step 3: Cross multiply
   40,109.10x = 55,351.21 × 21,959.52
4. Step 4: Simplify right side
   40,109.10x = 1,215,486,003.02
5. Step 5: Solve for x
   x = 1,215,486,003.02/40,109.10
6. Step 6: Final answer
   x = 30,304.49