Finding the Fourth Proportional to 142,686.62, 196,905.12 and 79,023.05

Step by Step Solution

1. Step 1: Write the proportion equation
   142,686.62 : 196,905.12 = 79,023.05 : x
2. Step 2: Convert to fraction form
   142,686.62/196,905.12 = 79,023.05/x
3. Step 3: Cross multiply
   142,686.62x = 196,905.12 × 79,023.05
4. Step 4: Simplify right side
   142,686.62x = 15,560,043,143.02
5. Step 5: Solve for x
   x = 15,560,043,143.02/142,686.62
6. Step 6: Final answer
   x = 109,050.47