Finding the Fourth Proportional to 217,572.48, 300,173.04 and 142,164.72

Step by Step Solution

1. Step 1: Write the proportion equation
   217,572.48 : 300,173.04 = 142,164.72 : x
2. Step 2: Convert to fraction form
   217,572.48/300,173.04 = 142,164.72/x
3. Step 3: Cross multiply
   217,572.48x = 300,173.04 × 142,164.72
4. Step 4: Simplify right side
   217,572.48x = 42,674,016,183.15
5. Step 5: Solve for x
   x = 42,674,016,183.15/217,572.48
6. Step 6: Final answer
   x = 196,137.01