Finding the Fourth Proportional to 142,270.01, 196,336.57 and 78,611.91

Step by Step Solution

1. Step 1: Write the proportion equation
   142,270.01 : 196,336.57 = 78,611.91 : x
2. Step 2: Convert to fraction form
   142,270.01/196,336.57 = 78,611.91/x
3. Step 3: Cross multiply
   142,270.01x = 196,336.57 × 78,611.91
4. Step 4: Simplify right side
   142,270.01x = 15,434,392,770.55
5. Step 5: Solve for x
   x = 15,434,392,770.55/142,270.01
6. Step 6: Final answer
   x = 108,486.62