Finding the Fourth Proportional to 55,648.73, 83,478.27 and 18,209.05

Step by Step Solution

1. Step 1: Write the proportion equation
   55,648.73 : 83,478.27 = 18,209.05 : x
2. Step 2: Convert to fraction form
   55,648.73/83,478.27 = 18,209.05/x
3. Step 3: Cross multiply
   55,648.73x = 83,478.27 × 18,209.05
4. Step 4: Simplify right side
   55,648.73x = 1,520,059,992.34
5. Step 5: Solve for x
   x = 1,520,059,992.34/55,648.73
6. Step 6: Final answer
   x = 27,315.27