Finding the Fourth Proportional to 158,662.36, 218,955.72 and 87,040.54

Step by Step Solution

1. Step 1: Write the proportion equation
   158,662.36 : 218,955.72 = 87,040.54 : x
2. Step 2: Convert to fraction form
   158,662.36/218,955.72 = 87,040.54/x
3. Step 3: Cross multiply
   158,662.36x = 218,955.72 × 87,040.54
4. Step 4: Simplify right side
   158,662.36x = 19,058,024,104.89
5. Step 5: Solve for x
   x = 19,058,024,104.89/158,662.36
6. Step 6: Final answer
   x = 120,116.86