Finding the Fourth Proportional to 55,217.89, 82,840.06 and 17,781.49

Step by Step Solution

1. Step 1: Write the proportion equation
   55,217.89 : 82,840.06 = 17,781.49 : x
2. Step 2: Convert to fraction form
   55,217.89/82,840.06 = 17,781.49/x
3. Step 3: Cross multiply
   55,217.89x = 82,840.06 × 17,781.49
4. Step 4: Simplify right side
   55,217.89x = 1,473,019,284.29
5. Step 5: Solve for x
   x = 1,473,019,284.29/55,217.89
6. Step 6: Final answer
   x = 26,676.49