Finding the Fourth Proportional to 142,158.52, 196,173.52 and 78,494.96

Step by Step Solution

1. Step 1: Write the proportion equation
   142,158.52 : 196,173.52 = 78,494.96 : x
2. Step 2: Convert to fraction form
   142,158.52/196,173.52 = 78,494.96/x
3. Step 3: Cross multiply
   142,158.52x = 196,173.52 × 78,494.96
4. Step 4: Simplify right side
   142,158.52x = 15,398,632,605.46
5. Step 5: Solve for x
   x = 15,398,632,605.46/142,158.52
6. Step 6: Final answer
   x = 108,320.15