Finding the Fourth Proportional to 65,796.13, 90,716.37 and 54,909.94

Step by Step Solution

1. Step 1: Write the proportion equation
   65,796.13 : 90,716.37 = 54,909.94 : x
2. Step 2: Convert to fraction form
   65,796.13/90,716.37 = 54,909.94/x
3. Step 3: Cross multiply
   65,796.13x = 90,716.37 × 54,909.94
4. Step 4: Simplify right side
   65,796.13x = 4,981,230,433.72
5. Step 5: Solve for x
   x = 4,981,230,433.72/65,796.13
6. Step 6: Final answer
   x = 75,707.04