Finding the Fourth Proportional to 142,645.71, 196,849.82 and 82,215.03

Step by Step Solution

1. Step 1: Write the proportion equation
   142,645.71 : 196,849.82 = 82,215.03 : x
2. Step 2: Convert to fraction form
   142,645.71/196,849.82 = 82,215.03/x
3. Step 3: Cross multiply
   142,645.71x = 196,849.82 × 82,215.03
4. Step 4: Simplify right side
   142,645.71x = 16,184,012,908.37
5. Step 5: Solve for x
   x = 16,184,012,908.37/142,645.71
6. Step 6: Final answer
   x = 113,456.01