Finding the Fourth Proportional to 104.72, 156.89 and 64.01

Step by Step Solution

1. Step 1: Write the proportion equation
   104.72 : 156.89 = 64.01 : x
2. Step 2: Convert to fraction form
   104.72/156.89 = 64.01/x
3. Step 3: Cross multiply
   104.72x = 156.89 × 64.01
4. Step 4: Simplify right side
   104.72x = 10,043.08
5. Step 5: Solve for x
   x = 10,043.08/104.72
6. Step 6: Final answer
   x = 95.91