Finding the Fourth Proportional to 42,012.69, 57,977.45 and 23,149.81

Step by Step Solution

1. Step 1: Write the proportion equation
   42,012.69 : 57,977.45 = 23,149.81 : x
2. Step 2: Convert to fraction form
   42,012.69/57,977.45 = 23,149.81/x
3. Step 3: Cross multiply
   42,012.69x = 57,977.45 × 23,149.81
4. Step 4: Simplify right side
   42,012.69x = 1,342,166,951.78
5. Step 5: Solve for x
   x = 1,342,166,951.78/42,012.69
6. Step 6: Final answer
   x = 31,946.71