Finding the Fourth Proportional to 42,046.42, 58,028.16 and 31,417.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,046.42 : 58,028.16 = 31,417.60 : x
2. Step 2: Convert to fraction form
   42,046.42/58,028.16 = 31,417.60/x
3. Step 3: Cross multiply
   42,046.42x = 58,028.16 × 31,417.60
4. Step 4: Simplify right side
   42,046.42x = 1,823,105,519.62
5. Step 5: Solve for x
   x = 1,823,105,519.62/42,046.42
6. Step 6: Final answer
   x = 43,359.35