Finding the Fourth Proportional to 140,103.59, 210,139.81 and 50,142.67

Step by Step Solution

1. Step 1: Write the proportion equation
   140,103.59 : 210,139.81 = 50,142.67 : x
2. Step 2: Convert to fraction form
   140,103.59/210,139.81 = 50,142.67/x
3. Step 3: Cross multiply
   140,103.59x = 210,139.81 × 50,142.67
4. Step 4: Simplify right side
   140,103.59x = 10,536,970,566.50
5. Step 5: Solve for x
   x = 10,536,970,566.50/140,103.59
6. Step 6: Final answer
   x = 75,208.43