Finding the Fourth Proportional to 162.86, 224.86 and 100.83

Step by Step Solution

1. Step 1: Write the proportion equation
   162.86 : 224.86 = 100.83 : x
2. Step 2: Convert to fraction form
   162.86/224.86 = 100.83/x
3. Step 3: Cross multiply
   162.86x = 224.86 × 100.83
4. Step 4: Simplify right side
   162.86x = 22,672.63
5. Step 5: Solve for x
   x = 22,672.63/162.86
6. Step 6: Final answer
   x = 139.22