Finding the Fourth Proportional to 31,072.14, 42,880.59 and 16,926.30

Step by Step Solution

1. Step 1: Write the proportion equation
   31,072.14 : 42,880.59 = 16,926.30 : x
2. Step 2: Convert to fraction form
   31,072.14/42,880.59 = 16,926.30/x
3. Step 3: Cross multiply
   31,072.14x = 42,880.59 × 16,926.30
4. Step 4: Simplify right side
   31,072.14x = 725,809,730.52
5. Step 5: Solve for x
   x = 725,809,730.52/31,072.14
6. Step 6: Final answer
   x = 23,358.86