Finding the Fourth Proportional to 142,945.71, 197,288.69 and 79,304.01

Step by Step Solution

1. Step 1: Write the proportion equation
   142,945.71 : 197,288.69 = 79,304.01 : x
2. Step 2: Convert to fraction form
   142,945.71/197,288.69 = 79,304.01/x
3. Step 3: Cross multiply
   142,945.71x = 197,288.69 × 79,304.01
4. Step 4: Simplify right side
   142,945.71x = 15,645,784,244.65
5. Step 5: Solve for x
   x = 15,645,784,244.65/142,945.71
6. Step 6: Final answer
   x = 109,452.63