Finding the Fourth Proportional to 42,019.05, 57,986.10 and 23,156.13

Step by Step Solution

1. Step 1: Write the proportion equation
   42,019.05 : 57,986.10 = 23,156.13 : x
2. Step 2: Convert to fraction form
   42,019.05/57,986.10 = 23,156.13/x
3. Step 3: Cross multiply
   42,019.05x = 57,986.10 × 23,156.13
4. Step 4: Simplify right side
   42,019.05x = 1,342,733,669.79
5. Step 5: Solve for x
   x = 1,342,733,669.79/42,019.05
6. Step 6: Final answer
   x = 31,955.36