Finding the Fourth Proportional to 72.93, 108.84 and 64.83

Step by Step Solution

1. Step 1: Write the proportion equation
   72.93 : 108.84 = 64.83 : x
2. Step 2: Convert to fraction form
   72.93/108.84 = 64.83/x
3. Step 3: Cross multiply
   72.93x = 108.84 × 64.83
4. Step 4: Simplify right side
   72.93x = 7,056.10
5. Step 5: Solve for x
   x = 7,056.10/72.93
6. Step 6: Final answer
   x = 96.75