Finding the Fourth Proportional to 31,091.82, 42,907.23 and 16,945.26

Step by Step Solution

1. Step 1: Write the proportion equation
   31,091.82 : 42,907.23 = 16,945.26 : x
2. Step 2: Convert to fraction form
   31,091.82/42,907.23 = 16,945.26/x
3. Step 3: Cross multiply
   31,091.82x = 42,907.23 × 16,945.26
4. Step 4: Simplify right side
   31,091.82x = 727,074,168.23
5. Step 5: Solve for x
   x = 727,074,168.23/31,091.82
6. Step 6: Final answer
   x = 23,384.74