Finding the Fourth Proportional to 142,614, 196,797.60 and 78,948

Step by Step Solution

1. Step 1: Write the proportion equation
   142,614 : 196,797.60 = 78,948 : x
2. Step 2: Convert to fraction form
   142,614/196,797.60 = 78,948/x
3. Step 3: Cross multiply
   142,614x = 196,797.60 × 78,948
4. Step 4: Simplify right side
   142,614x = 15,536,776,924.80
5. Step 5: Solve for x
   x = 15,536,776,924.80/142,614
6. Step 6: Final answer
   x = 108,942.86