Finding the Fourth Proportional to 142,576.52, 196,751.68 and 81,321.32

Step by Step Solution

1. Step 1: Write the proportion equation
   142,576.52 : 196,751.68 = 81,321.32 : x
2. Step 2: Convert to fraction form
   142,576.52/196,751.68 = 81,321.32/x
3. Step 3: Cross multiply
   142,576.52x = 196,751.68 × 81,321.32
4. Step 4: Simplify right side
   142,576.52x = 16,000,105,142.76
5. Step 5: Solve for x
   x = 16,000,105,142.76/142,576.52
6. Step 6: Final answer
   x = 112,221.18