Finding the Fourth Proportional to 31,120.38, 42,947.01 and 16,974

Step by Step Solution

1. Step 1: Write the proportion equation
   31,120.38 : 42,947.01 = 16,974 : x
2. Step 2: Convert to fraction form
   31,120.38/42,947.01 = 16,974/x
3. Step 3: Cross multiply
   31,120.38x = 42,947.01 × 16,974
4. Step 4: Simplify right side
   31,120.38x = 728,982,547.74
5. Step 5: Solve for x
   x = 728,982,547.74/31,120.38
6. Step 6: Final answer
   x = 23,424.60