Finding the Fourth Proportional to 31,986.68, 47,735.71 and 28,487.48

Step by Step Solution

1. Step 1: Write the proportion equation
   31,986.68 : 47,735.71 = 28,487.48 : x
2. Step 2: Convert to fraction form
   31,986.68/47,735.71 = 28,487.48/x
3. Step 3: Cross multiply
   31,986.68x = 47,735.71 × 28,487.48
4. Step 4: Simplify right side
   31,986.68x = 1,359,870,083.91
5. Step 5: Solve for x
   x = 1,359,870,083.91/31,986.68
6. Step 6: Final answer
   x = 42,513.64