Finding the Fourth Proportional to 42,128.56, 58,135.89 and 23,265.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,128.56 : 58,135.89 = 23,265.28 : x
2. Step 2: Convert to fraction form
   42,128.56/58,135.89 = 23,265.28/x
3. Step 3: Cross multiply
   42,128.56x = 58,135.89 × 23,265.28
4. Step 4: Simplify right side
   42,128.56x = 1,352,547,758.90
5. Step 5: Solve for x
   x = 1,352,547,758.90/42,128.56
6. Step 6: Final answer
   x = 32,105.25