Finding the Fourth Proportional to 42,019.38, 57,984.12 and 23,156.64

Step by Step Solution

1. Step 1: Write the proportion equation
   42,019.38 : 57,984.12 = 23,156.64 : x
2. Step 2: Convert to fraction form
   42,019.38/57,984.12 = 23,156.64/x
3. Step 3: Cross multiply
   42,019.38x = 57,984.12 × 23,156.64
4. Step 4: Simplify right side
   42,019.38x = 1,342,717,392.56
5. Step 5: Solve for x
   x = 1,342,717,392.56/42,019.38
6. Step 6: Final answer
   x = 31,954.72