Finding the Fourth Proportional to 47,499.28, 71,222.63 and 19,439.06

Step by Step Solution

1. Step 1: Write the proportion equation
   47,499.28 : 71,222.63 = 19,439.06 : x
2. Step 2: Convert to fraction form
   47,499.28/71,222.63 = 19,439.06/x
3. Step 3: Cross multiply
   47,499.28x = 71,222.63 × 19,439.06
4. Step 4: Simplify right side
   47,499.28x = 1,384,500,524.62
5. Step 5: Solve for x
   x = 1,384,500,524.62/47,499.28
6. Step 6: Final answer
   x = 29,147.82