Finding the Fourth Proportional to 42,128.34, 58,137.09 and 23,265.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,128.34 : 58,137.09 = 23,265.30 : x
2. Step 2: Convert to fraction form
   42,128.34/58,137.09 = 23,265.30/x
3. Step 3: Cross multiply
   42,128.34x = 58,137.09 × 23,265.30
4. Step 4: Simplify right side
   42,128.34x = 1,352,576,839.98
5. Step 5: Solve for x
   x = 1,352,576,839.98/42,128.34
6. Step 6: Final answer
   x = 32,106.10