Finding the Fourth Proportional to 76,855.57, 106,061.27 and 42,866.28

Step by Step Solution

1. Step 1: Write the proportion equation
   76,855.57 : 106,061.27 = 42,866.28 : x
2. Step 2: Convert to fraction form
   76,855.57/106,061.27 = 42,866.28/x
3. Step 3: Cross multiply
   76,855.57x = 106,061.27 × 42,866.28
4. Step 4: Simplify right side
   76,855.57x = 4,546,451,882.64
5. Step 5: Solve for x
   x = 4,546,451,882.64/76,855.57
6. Step 6: Final answer
   x = 59,155.79