Finding the Fourth Proportional to 39,673.59, 54,750.06 and 21,768.27

Step by Step Solution

1. Step 1: Write the proportion equation
   39,673.59 : 54,750.06 = 21,768.27 : x
2. Step 2: Convert to fraction form
   39,673.59/54,750.06 = 21,768.27/x
3. Step 3: Cross multiply
   39,673.59x = 54,750.06 × 21,768.27
4. Step 4: Simplify right side
   39,673.59x = 1,191,814,088.60
5. Step 5: Solve for x
   x = 1,191,814,088.60/39,673.59
6. Step 6: Final answer
   x = 30,040.49