Finding the Fourth Proportional to 42,021, 57,990.18 and 23,159.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,021 : 57,990.18 = 23,159.34 : x
2. Step 2: Convert to fraction form
   42,021/57,990.18 = 23,159.34/x
3. Step 3: Cross multiply
   42,021x = 57,990.18 × 23,159.34
4. Step 4: Simplify right side
   42,021x = 1,343,014,295.28
5. Step 5: Solve for x
   x = 1,343,014,295.28/42,021
6. Step 6: Final answer
   x = 31,960.55