Finding the Fourth Proportional to 54,667.42, 82,012.64 and 30,986.31

Step by Step Solution

1. Step 1: Write the proportion equation
   54,667.42 : 82,012.64 = 30,986.31 : x
2. Step 2: Convert to fraction form
   54,667.42/82,012.64 = 30,986.31/x
3. Step 3: Cross multiply
   54,667.42x = 82,012.64 × 30,986.31
4. Step 4: Simplify right side
   54,667.42x = 2,541,269,086.96
5. Step 5: Solve for x
   x = 2,541,269,086.96/54,667.42
6. Step 6: Final answer
   x = 46,485.99