Finding the Fourth Proportional to 31,079.30, 42,889.50 and 16,933.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,079.30 : 42,889.50 = 16,933.05 : x
2. Step 2: Convert to fraction form
   31,079.30/42,889.50 = 16,933.05/x
3. Step 3: Cross multiply
   31,079.30x = 42,889.50 × 16,933.05
4. Step 4: Simplify right side
   31,079.30x = 726,250,047.98
5. Step 5: Solve for x
   x = 726,250,047.98/31,079.30
6. Step 6: Final answer
   x = 23,367.65