Finding the Fourth Proportional to 140,016.09, 210,023.24 and 83,872.16

Step by Step Solution

1. Step 1: Write the proportion equation
   140,016.09 : 210,023.24 = 83,872.16 : x
2. Step 2: Convert to fraction form
   140,016.09/210,023.24 = 83,872.16/x
3. Step 3: Cross multiply
   140,016.09x = 210,023.24 × 83,872.16
4. Step 4: Simplify right side
   140,016.09x = 17,615,101,319.52
5. Step 5: Solve for x
   x = 17,615,101,319.52/140,016.09
6. Step 6: Final answer
   x = 125,807.69