Finding the Fourth Proportional to 42,153.53, 63,175.79 and 31,540.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,153.53 : 63,175.79 = 31,540.28 : x
2. Step 2: Convert to fraction form
   42,153.53/63,175.79 = 31,540.28/x
3. Step 3: Cross multiply
   42,153.53x = 63,175.79 × 31,540.28
4. Step 4: Simplify right side
   42,153.53x = 1,992,582,342.61
5. Step 5: Solve for x
   x = 1,992,582,342.61/42,153.53
6. Step 6: Final answer
   x = 47,269.64