Finding the Fourth Proportional to 42,012.11, 57,976.35 and 23,149.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,012.11 : 57,976.35 = 23,149.10 : x
2. Step 2: Convert to fraction form
   42,012.11/57,976.35 = 23,149.10/x
3. Step 3: Cross multiply
   42,012.11x = 57,976.35 × 23,149.10
4. Step 4: Simplify right side
   42,012.11x = 1,342,100,323.79
5. Step 5: Solve for x
   x = 1,342,100,323.79/42,012.11
6. Step 6: Final answer
   x = 31,945.56