Finding the Fourth Proportional to 54,890.72, 82,347.52 and 31,209.15

Step by Step Solution

1. Step 1: Write the proportion equation
   54,890.72 : 82,347.52 = 31,209.15 : x
2. Step 2: Convert to fraction form
   54,890.72/82,347.52 = 31,209.15/x
3. Step 3: Cross multiply
   54,890.72x = 82,347.52 × 31,209.15
4. Step 4: Simplify right side
   54,890.72x = 2,569,996,103.81
5. Step 5: Solve for x
   x = 2,569,996,103.81/54,890.72
6. Step 6: Final answer
   x = 46,820.23