Finding the Fourth Proportional to 72.62, 109.10 and 51.02

Step by Step Solution

1. Step 1: Write the proportion equation
   72.62 : 109.10 = 51.02 : x
2. Step 2: Convert to fraction form
   72.62/109.10 = 51.02/x
3. Step 3: Cross multiply
   72.62x = 109.10 × 51.02
4. Step 4: Simplify right side
   72.62x = 5,566.28
5. Step 5: Solve for x
   x = 5,566.28/72.62
6. Step 6: Final answer
   x = 76.65