Finding the Fourth Proportional to 82,190.22, 123,290.79 and 28,875.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82,190.22 : 123,290.79 = 28,875.72 : x
2. Step 2: Convert to fraction form
   82,190.22/123,290.79 = 28,875.72/x
3. Step 3: Cross multiply
   82,190.22x = 123,290.79 × 28,875.72
4. Step 4: Simplify right side
   82,190.22x = 3,560,110,330.62
5. Step 5: Solve for x
   x = 3,560,110,330.62/82,190.22
6. Step 6: Final answer
   x = 43,315.50