Finding the Fourth Proportional to 72,021.69, 108,048.51 and 27,648.45

Step by Step Solution

1. Step 1: Write the proportion equation
   72,021.69 : 108,048.51 = 27,648.45 : x
2. Step 2: Convert to fraction form
   72,021.69/108,048.51 = 27,648.45/x
3. Step 3: Cross multiply
   72,021.69x = 108,048.51 × 27,648.45
4. Step 4: Simplify right side
   72,021.69x = 2,987,373,826.31
5. Step 5: Solve for x
   x = 2,987,373,826.31/72,021.69
6. Step 6: Final answer
   x = 41,478.81