Finding the Fourth Proportional to 40,147.99, 55,399.73 and 22,238.55

Step by Step Solution

1. Step 1: Write the proportion equation
   40,147.99 : 55,399.73 = 22,238.55 : x
2. Step 2: Convert to fraction form
   40,147.99/55,399.73 = 22,238.55/x
3. Step 3: Cross multiply
   40,147.99x = 55,399.73 × 22,238.55
4. Step 4: Simplify right side
   40,147.99x = 1,232,009,388.59
5. Step 5: Solve for x
   x = 1,232,009,388.59/40,147.99
6. Step 6: Final answer
   x = 30,686.71