Finding the Fourth Proportional to 103,633.24, 155,274.90 and 82,813

Step by Step Solution

1. Step 1: Write the proportion equation
   103,633.24 : 155,274.90 = 82,813 : x
2. Step 2: Convert to fraction form
   103,633.24/155,274.90 = 82,813/x
3. Step 3: Cross multiply
   103,633.24x = 155,274.90 × 82,813
4. Step 4: Simplify right side
   103,633.24x = 12,858,780,293.70
5. Step 5: Solve for x
   x = 12,858,780,293.70/103,633.24
6. Step 6: Final answer
   x = 124,079.69