Finding the Fourth Proportional to 31,035, 42,820.83 and 18,288.71

Step by Step Solution

1. Step 1: Write the proportion equation
   31,035 : 42,820.83 = 18,288.71 : x
2. Step 2: Convert to fraction form
   31,035/42,820.83 = 18,288.71/x
3. Step 3: Cross multiply
   31,035x = 42,820.83 × 18,288.71
4. Step 4: Simplify right side
   31,035x = 783,137,527.73
5. Step 5: Solve for x
   x = 783,137,527.73/31,035
6. Step 6: Final answer
   x = 25,234.01