Finding the Fourth Proportional to 140,561.30, 210,939.15 and 101,146.70

Step by Step Solution

1. Step 1: Write the proportion equation
   140,561.30 : 210,939.15 = 101,146.70 : x
2. Step 2: Convert to fraction form
   140,561.30/210,939.15 = 101,146.70/x
3. Step 3: Cross multiply
   140,561.30x = 210,939.15 × 101,146.70
4. Step 4: Simplify right side
   140,561.30x = 21,335,798,923.31
5. Step 5: Solve for x
   x = 21,335,798,923.31/140,561.30
6. Step 6: Final answer
   x = 151,789.99