Finding the Fourth Proportional to 42,676.52, 58,915.75 and 31,178.54

Step by Step Solution

1. Step 1: Write the proportion equation
   42,676.52 : 58,915.75 = 31,178.54 : x
2. Step 2: Convert to fraction form
   42,676.52/58,915.75 = 31,178.54/x
3. Step 3: Cross multiply
   42,676.52x = 58,915.75 × 31,178.54
4. Step 4: Simplify right side
   42,676.52x = 1,836,907,068.01
5. Step 5: Solve for x
   x = 1,836,907,068.01/42,676.52
6. Step 6: Final answer
   x = 43,042.57