Finding the Fourth Proportional to 31,382.37, 43,255.62 and 30,551.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,382.37 : 43,255.62 = 30,551.31 : x
2. Step 2: Convert to fraction form
   31,382.37/43,255.62 = 30,551.31/x
3. Step 3: Cross multiply
   31,382.37x = 43,255.62 × 30,551.31
4. Step 4: Simplify right side
   31,382.37x = 1,321,515,855.86
5. Step 5: Solve for x
   x = 1,321,515,855.86/31,382.37
6. Step 6: Final answer
   x = 42,110.14