Finding the Fourth Proportional to 31,101.52, 42,920.72 and 16,954.36

Step by Step Solution

1. Step 1: Write the proportion equation
   31,101.52 : 42,920.72 = 16,954.36 : x
2. Step 2: Convert to fraction form
   31,101.52/42,920.72 = 16,954.36/x
3. Step 3: Cross multiply
   31,101.52x = 42,920.72 × 16,954.36
4. Step 4: Simplify right side
   31,101.52x = 727,693,338.34
5. Step 5: Solve for x
   x = 727,693,338.34/31,101.52
6. Step 6: Final answer
   x = 23,397.36