Finding the Fourth Proportional to 31,023.99, 42,812.91 and 16,876.89

Step by Step Solution

1. Step 1: Write the proportion equation
   31,023.99 : 42,812.91 = 16,876.89 : x
2. Step 2: Convert to fraction form
   31,023.99/42,812.91 = 16,876.89/x
3. Step 3: Cross multiply
   31,023.99x = 42,812.91 × 16,876.89
4. Step 4: Simplify right side
   31,023.99x = 722,548,772.65
5. Step 5: Solve for x
   x = 722,548,772.65/31,023.99
6. Step 6: Final answer
   x = 23,290.00