Finding the Fourth Proportional to 31,258.44, 43,136.72 and 17,111.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,258.44 : 43,136.72 = 17,111.28 : x
2. Step 2: Convert to fraction form
   31,258.44/43,136.72 = 17,111.28/x
3. Step 3: Cross multiply
   31,258.44x = 43,136.72 × 17,111.28
4. Step 4: Simplify right side
   31,258.44x = 738,124,494.20
5. Step 5: Solve for x
   x = 738,124,494.20/31,258.44
6. Step 6: Final answer
   x = 23,613.61