Finding the Fourth Proportional to 31,685.31, 43,735.46 and 18,265.53

Step by Step Solution

1. Step 1: Write the proportion equation
   31,685.31 : 43,735.46 = 18,265.53 : x
2. Step 2: Convert to fraction form
   31,685.31/43,735.46 = 18,265.53/x
3. Step 3: Cross multiply
   31,685.31x = 43,735.46 × 18,265.53
4. Step 4: Simplify right side
   31,685.31x = 798,851,356.69
5. Step 5: Solve for x
   x = 798,851,356.69/31,685.31
6. Step 6: Final answer
   x = 25,212.04