Finding the Fourth Proportional to 70,571.52, 105,860.16 and 17,982.72

Step by Step Solution

1. Step 1: Write the proportion equation
   70,571.52 : 105,860.16 = 17,982.72 : x
2. Step 2: Convert to fraction form
   70,571.52/105,860.16 = 17,982.72/x
3. Step 3: Cross multiply
   70,571.52x = 105,860.16 × 17,982.72
4. Step 4: Simplify right side
   70,571.52x = 1,903,653,616.44
5. Step 5: Solve for x
   x = 1,903,653,616.44/70,571.52
6. Step 6: Final answer
   x = 26,974.81