Finding the Fourth Proportional to 31,238.47, 43,109.71 and 17,091.62

Step by Step Solution

1. Step 1: Write the proportion equation
   31,238.47 : 43,109.71 = 17,091.62 : x
2. Step 2: Convert to fraction form
   31,238.47/43,109.71 = 17,091.62/x
3. Step 3: Cross multiply
   31,238.47x = 43,109.71 × 17,091.62
4. Step 4: Simplify right side
   31,238.47x = 736,814,523.35
5. Step 5: Solve for x
   x = 736,814,523.35/31,238.47
6. Step 6: Final answer
   x = 23,586.77