Finding the Fourth Proportional to 79.63, 109.89 and 46.89

Step by Step Solution

1. Step 1: Write the proportion equation
   79.63 : 109.89 = 46.89 : x
2. Step 2: Convert to fraction form
   79.63/109.89 = 46.89/x
3. Step 3: Cross multiply
   79.63x = 109.89 × 46.89
4. Step 4: Simplify right side
   79.63x = 5,152.63
5. Step 5: Solve for x
   x = 5,152.63/79.63
6. Step 6: Final answer
   x = 64.71