Finding the Fourth Proportional to 123,912.78, 185,870.99 and 30,418.53

Step by Step Solution

1. Step 1: Write the proportion equation
   123,912.78 : 185,870.99 = 30,418.53 : x
2. Step 2: Convert to fraction form
   123,912.78/185,870.99 = 30,418.53/x
3. Step 3: Cross multiply
   123,912.78x = 185,870.99 × 30,418.53
4. Step 4: Simplify right side
   123,912.78x = 5,653,922,285.44
5. Step 5: Solve for x
   x = 5,653,922,285.44/123,912.78
6. Step 6: Final answer
   x = 45,628.24