Finding the Fourth Proportional to 55,169.34, 82,766.43 and 20,109.12

Step by Step Solution

1. Step 1: Write the proportion equation
   55,169.34 : 82,766.43 = 20,109.12 : x
2. Step 2: Convert to fraction form
   55,169.34/82,766.43 = 20,109.12/x
3. Step 3: Cross multiply
   55,169.34x = 82,766.43 × 20,109.12
4. Step 4: Simplify right side
   55,169.34x = 1,664,360,072.84
5. Step 5: Solve for x
   x = 1,664,360,072.84/55,169.34
6. Step 6: Final answer
   x = 30,168.21