Finding the Fourth Proportional to 31,069.91, 42,876.53 and 16,922.81

Step by Step Solution

1. Step 1: Write the proportion equation
   31,069.91 : 42,876.53 = 16,922.81 : x
2. Step 2: Convert to fraction form
   31,069.91/42,876.53 = 16,922.81/x
3. Step 3: Cross multiply
   31,069.91x = 42,876.53 × 16,922.81
4. Step 4: Simplify right side
   31,069.91x = 725,591,071.65
5. Step 5: Solve for x
   x = 725,591,071.65/31,069.91
6. Step 6: Final answer
   x = 23,353.50