Finding the Fourth Proportional to 55,282.69, 76,286.37 and 31,087.32

Step by Step Solution

1. Step 1: Write the proportion equation
   55,282.69 : 76,286.37 = 31,087.32 : x
2. Step 2: Convert to fraction form
   55,282.69/76,286.37 = 31,087.32/x
3. Step 3: Cross multiply
   55,282.69x = 76,286.37 × 31,087.32
4. Step 4: Simplify right side
   55,282.69x = 2,371,538,795.83
5. Step 5: Solve for x
   x = 2,371,538,795.83/55,282.69
6. Step 6: Final answer
   x = 42,898.40