Finding the Fourth Proportional to 129,588.78, 178,831.72 and 73,018.38

Step by Step Solution

1. Step 1: Write the proportion equation
   129,588.78 : 178,831.72 = 73,018.38 : x
2. Step 2: Convert to fraction form
   129,588.78/178,831.72 = 73,018.38/x
3. Step 3: Cross multiply
   129,588.78x = 178,831.72 × 73,018.38
4. Step 4: Simplify right side
   129,588.78x = 13,058,002,487.01
5. Step 5: Solve for x
   x = 13,058,002,487.01/129,588.78
6. Step 6: Final answer
   x = 100,764.92