Finding the Fourth Proportional to 31,091.22, 42,904.63 and 16,943.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,091.22 : 42,904.63 = 16,943.76 : x
2. Step 2: Convert to fraction form
   31,091.22/42,904.63 = 16,943.76/x
3. Step 3: Cross multiply
   31,091.22x = 42,904.63 × 16,943.76
4. Step 4: Simplify right side
   31,091.22x = 726,965,454.37
5. Step 5: Solve for x
   x = 726,965,454.37/31,091.22
6. Step 6: Final answer
   x = 23,381.70