Finding the Fourth Proportional to 142,372.62, 196,469.55 and 78,701.76

Step by Step Solution

1. Step 1: Write the proportion equation
   142,372.62 : 196,469.55 = 78,701.76 : x
2. Step 2: Convert to fraction form
   142,372.62/196,469.55 = 78,701.76/x
3. Step 3: Cross multiply
   142,372.62x = 196,469.55 × 78,701.76
4. Step 4: Simplify right side
   142,372.62x = 15,462,499,371.41
5. Step 5: Solve for x
   x = 15,462,499,371.41/142,372.62
6. Step 6: Final answer
   x = 108,605.85