Finding the Fourth Proportional to 72.29, 108.61 and 46.63

Step by Step Solution

1. Step 1: Write the proportion equation
   72.29 : 108.61 = 46.63 : x
2. Step 2: Convert to fraction form
   72.29/108.61 = 46.63/x
3. Step 3: Cross multiply
   72.29x = 108.61 × 46.63
4. Step 4: Simplify right side
   72.29x = 5,063.94
5. Step 5: Solve for x
   x = 5,063.94/72.29
6. Step 6: Final answer
   x = 70.05