Finding the Fourth Proportional to 40,121.91, 55,367.55 and 22,216.53

Step by Step Solution

1. Step 1: Write the proportion equation
   40,121.91 : 55,367.55 = 22,216.53 : x
2. Step 2: Convert to fraction form
   40,121.91/55,367.55 = 22,216.53/x
3. Step 3: Cross multiply
   40,121.91x = 55,367.55 × 22,216.53
4. Step 4: Simplify right side
   40,121.91x = 1,230,074,558.76
5. Step 5: Solve for x
   x = 1,230,074,558.76/40,121.91
6. Step 6: Final answer
   x = 30,658.43