Finding the Fourth Proportional to 123,942.78, 185,912.55 and 30,449.34

Step by Step Solution

1. Step 1: Write the proportion equation
   123,942.78 : 185,912.55 = 30,449.34 : x
2. Step 2: Convert to fraction form
   123,942.78/185,912.55 = 30,449.34/x
3. Step 3: Cross multiply
   123,942.78x = 185,912.55 × 30,449.34
4. Step 4: Simplify right side
   123,942.78x = 5,660,914,445.22
5. Step 5: Solve for x
   x = 5,660,914,445.22/123,942.78
6. Step 6: Final answer
   x = 45,673.61