Finding the Fourth Proportional to 54,111.78, 74,681.33 and 30,243.42

Step by Step Solution

1. Step 1: Write the proportion equation
   54,111.78 : 74,681.33 = 30,243.42 : x
2. Step 2: Convert to fraction form
   54,111.78/74,681.33 = 30,243.42/x
3. Step 3: Cross multiply
   54,111.78x = 74,681.33 × 30,243.42
4. Step 4: Simplify right side
   54,111.78x = 2,258,618,678.13
5. Step 5: Solve for x
   x = 2,258,618,678.13/54,111.78
6. Step 6: Final answer
   x = 41,739.87