Finding the Fourth Proportional to 42,020.85, 57,988.77 and 23,157.97

Step by Step Solution

1. Step 1: Write the proportion equation
   42,020.85 : 57,988.77 = 23,157.97 : x
2. Step 2: Convert to fraction form
   42,020.85/57,988.77 = 23,157.97/x
3. Step 3: Cross multiply
   42,020.85x = 57,988.77 × 23,157.97
4. Step 4: Simplify right side
   42,020.85x = 1,342,902,196.00
5. Step 5: Solve for x
   x = 1,342,902,196.00/42,020.85
6. Step 6: Final answer
   x = 31,958.00