Finding the Fourth Proportional to 31,004.08, 42,787.38 and 16,856.62

Step by Step Solution

1. Step 1: Write the proportion equation
   31,004.08 : 42,787.38 = 16,856.62 : x
2. Step 2: Convert to fraction form
   31,004.08/42,787.38 = 16,856.62/x
3. Step 3: Cross multiply
   31,004.08x = 42,787.38 × 16,856.62
4. Step 4: Simplify right side
   31,004.08x = 721,250,605.46
5. Step 5: Solve for x
   x = 721,250,605.46/31,004.08
6. Step 6: Final answer
   x = 23,263.09