Finding the Fourth Proportional to 81,568.29, 122,362.43 and 28,983.09

Step by Step Solution

1. Step 1: Write the proportion equation
   81,568.29 : 122,362.43 = 28,983.09 : x
2. Step 2: Convert to fraction form
   81,568.29/122,362.43 = 28,983.09/x
3. Step 3: Cross multiply
   81,568.29x = 122,362.43 × 28,983.09
4. Step 4: Simplify right side
   81,568.29x = 3,546,441,176.39
5. Step 5: Solve for x
   x = 3,546,441,176.39/81,568.29
6. Step 6: Final answer
   x = 43,478.18