Finding the Fourth Proportional to 40,134.89, 55,389.32 and 22,231.56

Step by Step Solution

1. Step 1: Write the proportion equation
   40,134.89 : 55,389.32 = 22,231.56 : x
2. Step 2: Convert to fraction form
   40,134.89/55,389.32 = 22,231.56/x
3. Step 3: Cross multiply
   40,134.89x = 55,389.32 × 22,231.56
4. Step 4: Simplify right side
   40,134.89x = 1,231,391,170.86
5. Step 5: Solve for x
   x = 1,231,391,170.86/40,134.89
6. Step 6: Final answer
   x = 30,681.31