Finding the Fourth Proportional to 31,238.09, 43,109.19 and 17,091.23

Step by Step Solution

1. Step 1: Write the proportion equation
   31,238.09 : 43,109.19 = 17,091.23 : x
2. Step 2: Convert to fraction form
   31,238.09/43,109.19 = 17,091.23/x
3. Step 3: Cross multiply
   31,238.09x = 43,109.19 × 17,091.23
4. Step 4: Simplify right side
   31,238.09x = 736,789,081.40
5. Step 5: Solve for x
   x = 736,789,081.40/31,238.09
6. Step 6: Final answer
   x = 23,586.24