Finding the Fourth Proportional to 76,228.50, 105,195.33 and 42,694.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,228.50 : 105,195.33 = 42,694.50 : x
2. Step 2: Convert to fraction form
   76,228.50/105,195.33 = 42,694.50/x
3. Step 3: Cross multiply
   76,228.50x = 105,195.33 × 42,694.50
4. Step 4: Simplify right side
   76,228.50x = 4,491,262,016.69
5. Step 5: Solve for x
   x = 4,491,262,016.69/76,228.50
6. Step 6: Final answer
   x = 58,918.41