Finding the Fourth Proportional to 142,673.31, 214,026.37 and 83,509.49

Step by Step Solution

1. Step 1: Write the proportion equation
   142,673.31 : 214,026.37 = 83,509.49 : x
2. Step 2: Convert to fraction form
   142,673.31/214,026.37 = 83,509.49/x
3. Step 3: Cross multiply
   142,673.31x = 214,026.37 × 83,509.49
4. Step 4: Simplify right side
   142,673.31x = 17,873,233,331.54
5. Step 5: Solve for x
   x = 17,873,233,331.54/142,673.31
6. Step 6: Final answer
   x = 125,273.84