Finding the Fourth Proportional to 104.82, 156.98 and 64.15

Step by Step Solution

1. Step 1: Write the proportion equation
   104.82 : 156.98 = 64.15 : x
2. Step 2: Convert to fraction form
   104.82/156.98 = 64.15/x
3. Step 3: Cross multiply
   104.82x = 156.98 × 64.15
4. Step 4: Simplify right side
   104.82x = 10,070.27
5. Step 5: Solve for x
   x = 10,070.27/104.82
6. Step 6: Final answer
   x = 96.07