Finding the Fourth Proportional to 31,068.27, 42,872.68 and 17,637.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,068.27 : 42,872.68 = 17,637.76 : x
2. Step 2: Convert to fraction form
   31,068.27/42,872.68 = 17,637.76/x
3. Step 3: Cross multiply
   31,068.27x = 42,872.68 × 17,637.76
4. Step 4: Simplify right side
   31,068.27x = 756,178,040.40
5. Step 5: Solve for x
   x = 756,178,040.40/31,068.27
6. Step 6: Final answer
   x = 24,339.24