Finding the Fourth Proportional to 54,974.16, 75,864.33 and 31,100.31

Step by Step Solution

1. Step 1: Write the proportion equation
   54,974.16 : 75,864.33 = 31,100.31 : x
2. Step 2: Convert to fraction form
   54,974.16/75,864.33 = 31,100.31/x
3. Step 3: Cross multiply
   54,974.16x = 75,864.33 × 31,100.31
4. Step 4: Simplify right side
   54,974.16x = 2,359,404,180.94
5. Step 5: Solve for x
   x = 2,359,404,180.94/54,974.16
6. Step 6: Final answer
   x = 42,918.42