Finding the Fourth Proportional to 142,604.94, 196,804.08 and 78,942.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,604.94 : 196,804.08 = 78,942.72 : x
2. Step 2: Convert to fraction form
   142,604.94/196,804.08 = 78,942.72/x
3. Step 3: Cross multiply
   142,604.94x = 196,804.08 × 78,942.72
4. Step 4: Simplify right side
   142,604.94x = 15,536,249,382.30
5. Step 5: Solve for x
   x = 15,536,249,382.30/142,604.94
6. Step 6: Final answer
   x = 108,946.08