Finding the Fourth Proportional to 72.98, 109.31 and 36.83

Step by Step Solution

1. Step 1: Write the proportion equation
   72.98 : 109.31 = 36.83 : x
2. Step 2: Convert to fraction form
   72.98/109.31 = 36.83/x
3. Step 3: Cross multiply
   72.98x = 109.31 × 36.83
4. Step 4: Simplify right side
   72.98x = 4,025.89
5. Step 5: Solve for x
   x = 4,025.89/72.98
6. Step 6: Final answer
   x = 55.16