Finding the Fourth Proportional to 31,068.54, 42,872.94 and 17,639.46

Step by Step Solution

1. Step 1: Write the proportion equation
   31,068.54 : 42,872.94 = 17,639.46 : x
2. Step 2: Convert to fraction form
   31,068.54/42,872.94 = 17,639.46/x
3. Step 3: Cross multiply
   31,068.54x = 42,872.94 × 17,639.46
4. Step 4: Simplify right side
   31,068.54x = 756,255,510.21
5. Step 5: Solve for x
   x = 756,255,510.21/31,068.54
6. Step 6: Final answer
   x = 24,341.52