Finding the Fourth Proportional to 31,511, 43,483.78 and 17,170.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,511 : 43,483.78 = 17,170.88 : x
2. Step 2: Convert to fraction form
   31,511/43,483.78 = 17,170.88/x
3. Step 3: Cross multiply
   31,511x = 43,483.78 × 17,170.88
4. Step 4: Simplify right side
   31,511x = 746,654,768.33
5. Step 5: Solve for x
   x = 746,654,768.33/31,511
6. Step 6: Final answer
   x = 23,695.05