Finding the Fourth Proportional to 142,705.20, 196,932.69 and 82,275.51

Step by Step Solution

1. Step 1: Write the proportion equation
   142,705.20 : 196,932.69 = 82,275.51 : x
2. Step 2: Convert to fraction form
   142,705.20/196,932.69 = 82,275.51/x
3. Step 3: Cross multiply
   142,705.20x = 196,932.69 × 82,275.51
4. Step 4: Simplify right side
   142,705.20x = 16,202,737,505.42
5. Step 5: Solve for x
   x = 16,202,737,505.42/142,705.20
6. Step 6: Final answer
   x = 113,539.92