Finding the Fourth Proportional to 142,699.59, 196,874.82 and 85,299.03

Step by Step Solution

1. Step 1: Write the proportion equation
   142,699.59 : 196,874.82 = 85,299.03 : x
2. Step 2: Convert to fraction form
   142,699.59/196,874.82 = 85,299.03/x
3. Step 3: Cross multiply
   142,699.59x = 196,874.82 × 85,299.03
4. Step 4: Simplify right side
   142,699.59x = 16,793,231,177.42
5. Step 5: Solve for x
   x = 16,793,231,177.42/142,699.59
6. Step 6: Final answer
   x = 117,682.41