Finding the Fourth Proportional to 31,072.24, 42,880.35 and 16,925.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,072.24 : 42,880.35 = 16,925.05 : x
2. Step 2: Convert to fraction form
   31,072.24/42,880.35 = 16,925.05/x
3. Step 3: Cross multiply
   31,072.24x = 42,880.35 × 16,925.05
4. Step 4: Simplify right side
   31,072.24x = 725,752,067.77
5. Step 5: Solve for x
   x = 725,752,067.77/31,072.24
6. Step 6: Final answer
   x = 23,356.93