Finding the Fourth Proportional to 31,819.08, 47,748.72 and 17,788.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,819.08 : 47,748.72 = 17,788.31 : x
2. Step 2: Convert to fraction form
   31,819.08/47,748.72 = 17,788.31/x
3. Step 3: Cross multiply
   31,819.08x = 47,748.72 × 17,788.31
4. Step 4: Simplify right side
   31,819.08x = 849,369,033.46
5. Step 5: Solve for x
   x = 849,369,033.46/31,819.08
6. Step 6: Final answer
   x = 26,693.70