Finding the Fourth Proportional to 162.29, 223.89 and 100.10

Step by Step Solution

1. Step 1: Write the proportion equation
   162.29 : 223.89 = 100.10 : x
2. Step 2: Convert to fraction form
   162.29/223.89 = 100.10/x
3. Step 3: Cross multiply
   162.29x = 223.89 × 100.10
4. Step 4: Simplify right side
   162.29x = 22,411.39
5. Step 5: Solve for x
   x = 22,411.39/162.29
6. Step 6: Final answer
   x = 138.09