Finding the Fourth Proportional to 142,651.31, 196,858.50 and 82,221.54

Step by Step Solution

1. Step 1: Write the proportion equation
   142,651.31 : 196,858.50 = 82,221.54 : x
2. Step 2: Convert to fraction form
   142,651.31/196,858.50 = 82,221.54/x
3. Step 3: Cross multiply
   142,651.31x = 196,858.50 × 82,221.54
4. Step 4: Simplify right side
   142,651.31x = 16,186,009,032.09
5. Step 5: Solve for x
   x = 16,186,009,032.09/142,651.31
6. Step 6: Final answer
   x = 113,465.55