Finding the Fourth Proportional to 31,069.35, 42,875.71 and 16,922.20

Step by Step Solution

1. Step 1: Write the proportion equation
   31,069.35 : 42,875.71 = 16,922.20 : x
2. Step 2: Convert to fraction form
   31,069.35/42,875.71 = 16,922.20/x
3. Step 3: Cross multiply
   31,069.35x = 42,875.71 × 16,922.20
4. Step 4: Simplify right side
   31,069.35x = 725,551,339.76
5. Step 5: Solve for x
   x = 725,551,339.76/31,069.35
6. Step 6: Final answer
   x = 23,352.64