Finding the Fourth Proportional to 31,080.80, 42,890.36 and 16,933.34

Step by Step Solution

1. Step 1: Write the proportion equation
   31,080.80 : 42,890.36 = 16,933.34 : x
2. Step 2: Convert to fraction form
   31,080.80/42,890.36 = 16,933.34/x
3. Step 3: Cross multiply
   31,080.80x = 42,890.36 × 16,933.34
4. Step 4: Simplify right side
   31,080.80x = 726,276,749.48
5. Step 5: Solve for x
   x = 726,276,749.48/31,080.80
6. Step 6: Final answer
   x = 23,367.38