Finding the Fourth Proportional to 140,559.30, 210,936.15 and 101,144.70

Step by Step Solution

1. Step 1: Write the proportion equation
   140,559.30 : 210,936.15 = 101,144.70 : x
2. Step 2: Convert to fraction form
   140,559.30/210,936.15 = 101,144.70/x
3. Step 3: Cross multiply
   140,559.30x = 210,936.15 × 101,144.70
4. Step 4: Simplify right side
   140,559.30x = 21,335,073,610.91
5. Step 5: Solve for x
   x = 21,335,073,610.91/140,559.30
6. Step 6: Final answer
   x = 151,786.99