Finding the Fourth Proportional to 47,123.46, 70,684.20 and 13,842.72

Step by Step Solution

1. Step 1: Write the proportion equation
   47,123.46 : 70,684.20 = 13,842.72 : x
2. Step 2: Convert to fraction form
   47,123.46/70,684.20 = 13,842.72/x
3. Step 3: Cross multiply
   47,123.46x = 70,684.20 × 13,842.72
4. Step 4: Simplify right side
   47,123.46x = 978,461,589.02
5. Step 5: Solve for x
   x = 978,461,589.02/47,123.46
6. Step 6: Final answer
   x = 20,763.79