Finding the Fourth Proportional to 72.83, 108.56 and 67.36

Step by Step Solution

1. Step 1: Write the proportion equation
   72.83 : 108.56 = 67.36 : x
2. Step 2: Convert to fraction form
   72.83/108.56 = 67.36/x
3. Step 3: Cross multiply
   72.83x = 108.56 × 67.36
4. Step 4: Simplify right side
   72.83x = 7,312.60
5. Step 5: Solve for x
   x = 7,312.60/72.83
6. Step 6: Final answer
   x = 100.41