Finding the Fourth Proportional to 31,608.16, 43,627.94 and 19,664.37

Step by Step Solution

1. Step 1: Write the proportion equation
   31,608.16 : 43,627.94 = 19,664.37 : x
2. Step 2: Convert to fraction form
   31,608.16/43,627.94 = 19,664.37/x
3. Step 3: Cross multiply
   31,608.16x = 43,627.94 × 19,664.37
4. Step 4: Simplify right side
   31,608.16x = 857,915,954.50
5. Step 5: Solve for x
   x = 857,915,954.50/31,608.16
6. Step 6: Final answer
   x = 27,142.23