Finding the Fourth Proportional to 42,020.25, 57,991.59 and 23,161.02

Step by Step Solution

1. Step 1: Write the proportion equation
   42,020.25 : 57,991.59 = 23,161.02 : x
2. Step 2: Convert to fraction form
   42,020.25/57,991.59 = 23,161.02/x
3. Step 3: Cross multiply
   42,020.25x = 57,991.59 × 23,161.02
4. Step 4: Simplify right side
   42,020.25x = 1,343,144,375.82
5. Step 5: Solve for x
   x = 1,343,144,375.82/42,020.25
6. Step 6: Final answer
   x = 31,964.22