Finding the Fourth Proportional to 142,801.20, 214,200.72 and 42,960.96

Step by Step Solution

1. Step 1: Write the proportion equation
   142,801.20 : 214,200.72 = 42,960.96 : x
2. Step 2: Convert to fraction form
   142,801.20/214,200.72 = 42,960.96/x
3. Step 3: Cross multiply
   142,801.20x = 214,200.72 × 42,960.96
4. Step 4: Simplify right side
   142,801.20x = 9,202,268,563.89
5. Step 5: Solve for x
   x = 9,202,268,563.89/142,801.20
6. Step 6: Final answer
   x = 64,441.12