Finding the Fourth Proportional to 76,850.56, 106,053.57 and 42,859.09

Step by Step Solution

1. Step 1: Write the proportion equation
   76,850.56 : 106,053.57 = 42,859.09 : x
2. Step 2: Convert to fraction form
   76,850.56/106,053.57 = 42,859.09/x
3. Step 3: Cross multiply
   76,850.56x = 106,053.57 × 42,859.09
4. Step 4: Simplify right side
   76,850.56x = 4,545,359,501.45
5. Step 5: Solve for x
   x = 4,545,359,501.45/76,850.56
6. Step 6: Final answer
   x = 59,145.43