Finding the Fourth Proportional to 142,722.29, 196,954.20 and 78,192.83

Step by Step Solution

1. Step 1: Write the proportion equation
   142,722.29 : 196,954.20 = 78,192.83 : x
2. Step 2: Convert to fraction form
   142,722.29/196,954.20 = 78,192.83/x
3. Step 3: Cross multiply
   142,722.29x = 196,954.20 × 78,192.83
4. Step 4: Simplify right side
   142,722.29x = 15,400,406,278.39
5. Step 5: Solve for x
   x = 15,400,406,278.39/142,722.29
6. Step 6: Final answer
   x = 107,904.70