Finding the Fourth Proportional to 31,014.38, 42,803.01 and 18,271.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,014.38 : 42,803.01 = 18,271.56 : x
2. Step 2: Convert to fraction form
   31,014.38/42,803.01 = 18,271.56/x
3. Step 3: Cross multiply
   31,014.38x = 42,803.01 × 18,271.56
4. Step 4: Simplify right side
   31,014.38x = 782,077,765.40
5. Step 5: Solve for x
   x = 782,077,765.40/31,014.38
6. Step 6: Final answer
   x = 25,216.62