Finding the Fourth Proportional to 40,047.36, 55,260.58 and 22,139.96

Step by Step Solution

1. Step 1: Write the proportion equation
   40,047.36 : 55,260.58 = 22,139.96 : x
2. Step 2: Convert to fraction form
   40,047.36/55,260.58 = 22,139.96/x
3. Step 3: Cross multiply
   40,047.36x = 55,260.58 × 22,139.96
4. Step 4: Simplify right side
   40,047.36x = 1,223,467,030.78
5. Step 5: Solve for x
   x = 1,223,467,030.78/40,047.36
6. Step 6: Final answer
   x = 30,550.50