Finding the Fourth Proportional to 162,016.69, 223,578.39 and 90,395.18

Step by Step Solution

1. Step 1: Write the proportion equation
   162,016.69 : 223,578.39 = 90,395.18 : x
2. Step 2: Convert to fraction form
   162,016.69/223,578.39 = 90,395.18/x
3. Step 3: Cross multiply
   162,016.69x = 223,578.39 × 90,395.18
4. Step 4: Simplify right side
   162,016.69x = 20,210,408,808.16
5. Step 5: Solve for x
   x = 20,210,408,808.16/162,016.69
6. Step 6: Final answer
   x = 124,742.76