Finding the Fourth Proportional to 31,217.06, 43,079.55 and 17,069.91

Step by Step Solution

1. Step 1: Write the proportion equation
   31,217.06 : 43,079.55 = 17,069.91 : x
2. Step 2: Convert to fraction form
   31,217.06/43,079.55 = 17,069.91/x
3. Step 3: Cross multiply
   31,217.06x = 43,079.55 × 17,069.91
4. Step 4: Simplify right side
   31,217.06x = 735,363,815.78
5. Step 5: Solve for x
   x = 735,363,815.78/31,217.06
6. Step 6: Final answer
   x = 23,556.47