Finding the Fourth Proportional to 76,749.36, 105,917.39 and 42,757.83

Step by Step Solution

1. Step 1: Write the proportion equation
   76,749.36 : 105,917.39 = 42,757.83 : x
2. Step 2: Convert to fraction form
   76,749.36/105,917.39 = 42,757.83/x
3. Step 3: Cross multiply
   76,749.36x = 105,917.39 × 42,757.83
4. Step 4: Simplify right side
   76,749.36x = 4,528,797,702.22
5. Step 5: Solve for x
   x = 4,528,797,702.22/76,749.36
6. Step 6: Final answer
   x = 59,007.63