Finding the Fourth Proportional to 31,096.91, 42,913.94 and 16,949.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,096.91 : 42,913.94 = 16,949.72 : x
2. Step 2: Convert to fraction form
   31,096.91/42,913.94 = 16,949.72/x
3. Step 3: Cross multiply
   31,096.91x = 42,913.94 × 16,949.72
4. Step 4: Simplify right side
   31,096.91x = 727,379,289.63
5. Step 5: Solve for x
   x = 727,379,289.63/31,096.91
6. Step 6: Final answer
   x = 23,390.72