Finding the Fourth Proportional to 42,019.45, 57,986.55 and 23,156.57

Step by Step Solution

1. Step 1: Write the proportion equation
   42,019.45 : 57,986.55 = 23,156.57 : x
2. Step 2: Convert to fraction form
   42,019.45/57,986.55 = 23,156.57/x
3. Step 3: Cross multiply
   42,019.45x = 57,986.55 × 23,156.57
4. Step 4: Simplify right side
   42,019.45x = 1,342,769,604.13
5. Step 5: Solve for x
   x = 1,342,769,604.13/42,019.45
6. Step 6: Final answer
   x = 31,955.91