Finding the Fourth Proportional to 40,142.12, 55,395.39 and 22,237.07

Step by Step Solution

1. Step 1: Write the proportion equation
   40,142.12 : 55,395.39 = 22,237.07 : x
2. Step 2: Convert to fraction form
   40,142.12/55,395.39 = 22,237.07/x
3. Step 3: Cross multiply
   40,142.12x = 55,395.39 × 22,237.07
4. Step 4: Simplify right side
   40,142.12x = 1,231,830,971.52
5. Step 5: Solve for x
   x = 1,231,830,971.52/40,142.12
6. Step 6: Final answer
   x = 30,686.75