Finding the Fourth Proportional to 39,945.42, 55,124.86 and 22,040.96

Step by Step Solution

1. Step 1: Write the proportion equation
   39,945.42 : 55,124.86 = 22,040.96 : x
2. Step 2: Convert to fraction form
   39,945.42/55,124.86 = 22,040.96/x
3. Step 3: Cross multiply
   39,945.42x = 55,124.86 × 22,040.96
4. Step 4: Simplify right side
   39,945.42x = 1,215,004,834.27
5. Step 5: Solve for x
   x = 1,215,004,834.27/39,945.42
6. Step 6: Final answer
   x = 30,416.62