Finding the Fourth Proportional to 31,091.72, 42,905.32 and 16,944.26

Step by Step Solution

1. Step 1: Write the proportion equation
   31,091.72 : 42,905.32 = 16,944.26 : x
2. Step 2: Convert to fraction form
   31,091.72/42,905.32 = 16,944.26/x
3. Step 3: Cross multiply
   31,091.72x = 42,905.32 × 16,944.26
4. Step 4: Simplify right side
   31,091.72x = 726,998,598.22
5. Step 5: Solve for x
   x = 726,998,598.22/31,091.72
6. Step 6: Final answer
   x = 23,382.39