Finding the Fourth Proportional to 142,587.72, 196,791.76 and 82,146.60

Step by Step Solution

1. Step 1: Write the proportion equation
   142,587.72 : 196,791.76 = 82,146.60 : x
2. Step 2: Convert to fraction form
   142,587.72/196,791.76 = 82,146.60/x
3. Step 3: Cross multiply
   142,587.72x = 196,791.76 × 82,146.60
4. Step 4: Simplify right side
   142,587.72x = 16,165,773,992.02
5. Step 5: Solve for x
   x = 16,165,773,992.02/142,587.72
6. Step 6: Final answer
   x = 113,374.24