Finding the Fourth Proportional to 31,049.20, 42,848.10 and 16,902.22

Step by Step Solution

1. Step 1: Write the proportion equation
   31,049.20 : 42,848.10 = 16,902.22 : x
2. Step 2: Convert to fraction form
   31,049.20/42,848.10 = 16,902.22/x
3. Step 3: Cross multiply
   31,049.20x = 42,848.10 × 16,902.22
4. Step 4: Simplify right side
   31,049.20x = 724,228,012.78
5. Step 5: Solve for x
   x = 724,228,012.78/31,049.20
6. Step 6: Final answer
   x = 23,325.17