Finding the Fourth Proportional to 42,638.78, 58,840.81 and 23,520.41

Step by Step Solution

1. Step 1: Write the proportion equation
   42,638.78 : 58,840.81 = 23,520.41 : x
2. Step 2: Convert to fraction form
   42,638.78/58,840.81 = 23,520.41/x
3. Step 3: Cross multiply
   42,638.78x = 58,840.81 × 23,520.41
4. Step 4: Simplify right side
   42,638.78x = 1,383,959,975.93
5. Step 5: Solve for x
   x = 1,383,959,975.93/42,638.78
6. Step 6: Final answer
   x = 32,457.78