Finding the Fourth Proportional to 42,019.62, 57,989.79 and 23,156.70

Step by Step Solution

1. Step 1: Write the proportion equation
   42,019.62 : 57,989.79 = 23,156.70 : x
2. Step 2: Convert to fraction form
   42,019.62/57,989.79 = 23,156.70/x
3. Step 3: Cross multiply
   42,019.62x = 57,989.79 × 23,156.70
4. Step 4: Simplify right side
   42,019.62x = 1,342,852,170.09
5. Step 5: Solve for x
   x = 1,342,852,170.09/42,019.62
6. Step 6: Final answer
   x = 31,957.74