Finding the Fourth Proportional to 76,399.39, 105,418.82 and 44,128.88

Step by Step Solution

1. Step 1: Write the proportion equation
   76,399.39 : 105,418.82 = 44,128.88 : x
2. Step 2: Convert to fraction form
   76,399.39/105,418.82 = 44,128.88/x
3. Step 3: Cross multiply
   76,399.39x = 105,418.82 × 44,128.88
4. Step 4: Simplify right side
   76,399.39x = 4,652,014,240.42
5. Step 5: Solve for x
   x = 4,652,014,240.42/76,399.39
6. Step 6: Final answer
   x = 60,890.73