Finding the Fourth Proportional to 142,682.87, 212,765.18 and 141,401.62

Step by Step Solution

1. Step 1: Write the proportion equation
   142,682.87 : 212,765.18 = 141,401.62 : x
2. Step 2: Convert to fraction form
   142,682.87/212,765.18 = 141,401.62/x
3. Step 3: Cross multiply
   142,682.87x = 212,765.18 × 141,401.62
4. Step 4: Simplify right side
   142,682.87x = 30,085,339,892.67
5. Step 5: Solve for x
   x = 30,085,339,892.67/142,682.87
6. Step 6: Final answer
   x = 210,854.60