Finding the Fourth Proportional to 34,179.89, 47,171.50 and 20,748.06

Step by Step Solution

1. Step 1: Write the proportion equation
   34,179.89 : 47,171.50 = 20,748.06 : x
2. Step 2: Convert to fraction form
   34,179.89/47,171.50 = 20,748.06/x
3. Step 3: Cross multiply
   34,179.89x = 47,171.50 × 20,748.06
4. Step 4: Simplify right side
   34,179.89x = 978,717,112.29
5. Step 5: Solve for x
   x = 978,717,112.29/34,179.89
6. Step 6: Final answer
   x = 28,634.30