Finding the Fourth Proportional to 31,049.34, 42,848.92 and 16,902.78

Step by Step Solution

1. Step 1: Write the proportion equation
   31,049.34 : 42,848.92 = 16,902.78 : x
2. Step 2: Convert to fraction form
   31,049.34/42,848.92 = 16,902.78/x
3. Step 3: Cross multiply
   31,049.34x = 42,848.92 × 16,902.78
4. Step 4: Simplify right side
   31,049.34x = 724,265,868.00
5. Step 5: Solve for x
   x = 724,265,868.00/31,049.34
6. Step 6: Final answer
   x = 23,326.29