Finding the Fourth Proportional to 31,009.70, 42,817.49 and 23,828.30

Step by Step Solution

1. Step 1: Write the proportion equation
   31,009.70 : 42,817.49 = 23,828.30 : x
2. Step 2: Convert to fraction form
   31,009.70/42,817.49 = 23,828.30/x
3. Step 3: Cross multiply
   31,009.70x = 42,817.49 × 23,828.30
4. Step 4: Simplify right side
   31,009.70x = 1,020,267,846.90
5. Step 5: Solve for x
   x = 1,020,267,846.90/31,009.70
6. Step 6: Final answer
   x = 32,901.57