Finding the Fourth Proportional to 47,616.41, 71,429.38 and 17,638.72

Step by Step Solution

1. Step 1: Write the proportion equation
   47,616.41 : 71,429.38 = 17,638.72 : x
2. Step 2: Convert to fraction form
   47,616.41/71,429.38 = 17,638.72/x
3. Step 3: Cross multiply
   47,616.41x = 71,429.38 × 17,638.72
4. Step 4: Simplify right side
   47,616.41x = 1,259,922,610.92
5. Step 5: Solve for x
   x = 1,259,922,610.92/47,616.41
6. Step 6: Final answer
   x = 26,459.84