Finding the Fourth Proportional to 76,846.56, 106,048.71 and 42,857.20

Step by Step Solution

1. Step 1: Write the proportion equation
   76,846.56 : 106,048.71 = 42,857.20 : x
2. Step 2: Convert to fraction form
   76,846.56/106,048.71 = 42,857.20/x
3. Step 3: Cross multiply
   76,846.56x = 106,048.71 × 42,857.20
4. Step 4: Simplify right side
   76,846.56x = 4,544,950,774.21
5. Step 5: Solve for x
   x = 4,544,950,774.21/76,846.56
6. Step 6: Final answer
   x = 59,143.19