Finding the Fourth Proportional to 72.22, 108.15 and 46.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72.22 : 108.15 = 46.50 : x
2. Step 2: Convert to fraction form
   72.22/108.15 = 46.50/x
3. Step 3: Cross multiply
   72.22x = 108.15 × 46.50
4. Step 4: Simplify right side
   72.22x = 5,028.98
5. Step 5: Solve for x
   x = 5,028.98/72.22
6. Step 6: Final answer
   x = 69.63