Finding the Fourth Proportional to 82,021.38, 123,068.12 and 28,751.74

Step by Step Solution

1. Step 1: Write the proportion equation
   82,021.38 : 123,068.12 = 28,751.74 : x
2. Step 2: Convert to fraction form
   82,021.38/123,068.12 = 28,751.74/x
3. Step 3: Cross multiply
   82,021.38x = 123,068.12 × 28,751.74
4. Step 4: Simplify right side
   82,021.38x = 3,538,422,588.53
5. Step 5: Solve for x
   x = 3,538,422,588.53/82,021.38
6. Step 6: Final answer
   x = 43,140.25