Finding the Fourth Proportional to 31,071.33, 42,878.43 and 16,924.17

Step by Step Solution

1. Step 1: Write the proportion equation
   31,071.33 : 42,878.43 = 16,924.17 : x
2. Step 2: Convert to fraction form
   31,071.33/42,878.43 = 16,924.17/x
3. Step 3: Cross multiply
   31,071.33x = 42,878.43 × 16,924.17
4. Step 4: Simplify right side
   31,071.33x = 725,681,838.65
5. Step 5: Solve for x
   x = 725,681,838.65/31,071.33
6. Step 6: Final answer
   x = 23,355.35