Finding the Fourth Proportional to 31,111.62, 42,934.24 and 16,964.70

Step by Step Solution

1. Step 1: Write the proportion equation
   31,111.62 : 42,934.24 = 16,964.70 : x
2. Step 2: Convert to fraction form
   31,111.62/42,934.24 = 16,964.70/x
3. Step 3: Cross multiply
   31,111.62x = 42,934.24 × 16,964.70
4. Step 4: Simplify right side
   31,111.62x = 728,366,501.33
5. Step 5: Solve for x
   x = 728,366,501.33/31,111.62
6. Step 6: Final answer
   x = 23,411.40