Finding the Fourth Proportional to 124,067.78, 186,178.21 and 57,495.50

Step by Step Solution

1. Step 1: Write the proportion equation
   124,067.78 : 186,178.21 = 57,495.50 : x
2. Step 2: Convert to fraction form
   124,067.78/186,178.21 = 57,495.50/x
3. Step 3: Cross multiply
   124,067.78x = 186,178.21 × 57,495.50
4. Step 4: Simplify right side
   124,067.78x = 10,704,408,198.43
5. Step 5: Solve for x
   x = 10,704,408,198.43/124,067.78
6. Step 6: Final answer
   x = 86,278.71