Finding the Fourth Proportional to 42,128.88, 58,138.20 and 23,266.32

Step by Step Solution

1. Step 1: Write the proportion equation
   42,128.88 : 58,138.20 = 23,266.32 : x
2. Step 2: Convert to fraction form
   42,128.88/58,138.20 = 23,266.32/x
3. Step 3: Cross multiply
   42,128.88x = 58,138.20 × 23,266.32
4. Step 4: Simplify right side
   42,128.88x = 1,352,661,965.42
5. Step 5: Solve for x
   x = 1,352,661,965.42/42,128.88
6. Step 6: Final answer
   x = 32,107.71