Finding the Fourth Proportional to 103,637.24, 155,280.90 and 82,817

Step by Step Solution

1. Step 1: Write the proportion equation
   103,637.24 : 155,280.90 = 82,817 : x
2. Step 2: Convert to fraction form
   103,637.24/155,280.90 = 82,817/x
3. Step 3: Cross multiply
   103,637.24x = 155,280.90 × 82,817
4. Step 4: Simplify right side
   103,637.24x = 12,859,898,295.30
5. Step 5: Solve for x
   x = 12,859,898,295.30/103,637.24
6. Step 6: Final answer
   x = 124,085.69