Finding the Fourth Proportional to 123,720.72, 185,544.05 and 64,524.09

Step by Step Solution

1. Step 1: Write the proportion equation
   123,720.72 : 185,544.05 = 64,524.09 : x
2. Step 2: Convert to fraction form
   123,720.72/185,544.05 = 64,524.09/x
3. Step 3: Cross multiply
   123,720.72x = 185,544.05 × 64,524.09
4. Step 4: Simplify right side
   123,720.72x = 11,972,061,606.33
5. Step 5: Solve for x
   x = 11,972,061,606.33/123,720.72
6. Step 6: Final answer
   x = 96,766.83