Finding the Fourth Proportional to 142,019.16, 195,986.42 and 78,357.08

Step by Step Solution

1. Step 1: Write the proportion equation
   142,019.16 : 195,986.42 = 78,357.08 : x
2. Step 2: Convert to fraction form
   142,019.16/195,986.42 = 78,357.08/x
3. Step 3: Cross multiply
   142,019.16x = 195,986.42 × 78,357.08
4. Step 4: Simplify right side
   142,019.16x = 15,356,923,590.85
5. Step 5: Solve for x
   x = 15,356,923,590.85/142,019.16
6. Step 6: Final answer
   x = 108,132.76