Finding the Fourth Proportional to 42,018.84, 57,986.01 and 23,155.97

Step by Step Solution

1. Step 1: Write the proportion equation
   42,018.84 : 57,986.01 = 23,155.97 : x
2. Step 2: Convert to fraction form
   42,018.84/57,986.01 = 23,155.97/x
3. Step 3: Cross multiply
   42,018.84x = 57,986.01 × 23,155.97
4. Step 4: Simplify right side
   42,018.84x = 1,342,722,018.05
5. Step 5: Solve for x
   x = 1,342,722,018.05/42,018.84
6. Step 6: Final answer
   x = 31,955.24