Finding the Fourth Proportional to 142,271.45, 196,338.56 and 78,613.37

Step by Step Solution

1. Step 1: Write the proportion equation
   142,271.45 : 196,338.56 = 78,613.37 : x
2. Step 2: Convert to fraction form
   142,271.45/196,338.56 = 78,613.37/x
3. Step 3: Cross multiply
   142,271.45x = 196,338.56 × 78,613.37
4. Step 4: Simplify right side
   142,271.45x = 15,434,835,862.55
5. Step 5: Solve for x
   x = 15,434,835,862.55/142,271.45
6. Step 6: Final answer
   x = 108,488.64