Finding the Fourth Proportional to 39,978.50, 55,170.41 and 22,073.54

Step by Step Solution

1. Step 1: Write the proportion equation
   39,978.50 : 55,170.41 = 22,073.54 : x
2. Step 2: Convert to fraction form
   39,978.50/55,170.41 = 22,073.54/x
3. Step 3: Cross multiply
   39,978.50x = 55,170.41 × 22,073.54
4. Step 4: Simplify right side
   39,978.50x = 1,217,805,865.73
5. Step 5: Solve for x
   x = 1,217,805,865.73/39,978.50
6. Step 6: Final answer
   x = 30,461.52