Finding the Fourth Proportional to 31,749.72, 43,825.62 and 19,659.48

Step by Step Solution

1. Step 1: Write the proportion equation
   31,749.72 : 43,825.62 = 19,659.48 : x
2. Step 2: Convert to fraction form
   31,749.72/43,825.62 = 19,659.48/x
3. Step 3: Cross multiply
   31,749.72x = 43,825.62 × 19,659.48
4. Step 4: Simplify right side
   31,749.72x = 861,588,899.88
5. Step 5: Solve for x
   x = 861,588,899.88/31,749.72
6. Step 6: Final answer
   x = 27,136.90