Finding the Fourth Proportional to 31,241.98, 43,112.82 and 18,664.30

Step by Step Solution

1. Step 1: Write the proportion equation
   31,241.98 : 43,112.82 = 18,664.30 : x
2. Step 2: Convert to fraction form
   31,241.98/43,112.82 = 18,664.30/x
3. Step 3: Cross multiply
   31,241.98x = 43,112.82 × 18,664.30
4. Step 4: Simplify right side
   31,241.98x = 804,670,606.33
5. Step 5: Solve for x
   x = 804,670,606.33/31,241.98
6. Step 6: Final answer
   x = 25,756.07