Finding the Fourth Proportional to 31,490, 43,456.20 and 17,342.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,490 : 43,456.20 = 17,342.84 : x
2. Step 2: Convert to fraction form
   31,490/43,456.20 = 17,342.84/x
3. Step 3: Cross multiply
   31,490x = 43,456.20 × 17,342.84
4. Step 4: Simplify right side
   31,490x = 753,653,923.61
5. Step 5: Solve for x
   x = 753,653,923.61/31,490
6. Step 6: Final answer
   x = 23,933.12