Finding the Fourth Proportional to 31,276, 43,160.88 and 17,129.35

Step by Step Solution

1. Step 1: Write the proportion equation
   31,276 : 43,160.88 = 17,129.35 : x
2. Step 2: Convert to fraction form
   31,276/43,160.88 = 17,129.35/x
3. Step 3: Cross multiply
   31,276x = 43,160.88 × 17,129.35
4. Step 4: Simplify right side
   31,276x = 739,317,819.83
5. Step 5: Solve for x
   x = 739,317,819.83/31,276
6. Step 6: Final answer
   x = 23,638.50