Finding the Fourth Proportional to 28,141.50, 42,226.83 and 14,290.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,141.50 : 42,226.83 = 14,290.50 : x
2. Step 2: Convert to fraction form
   28,141.50/42,226.83 = 14,290.50/x
3. Step 3: Cross multiply
   28,141.50x = 42,226.83 × 14,290.50
4. Step 4: Simplify right side
   28,141.50x = 603,442,514.12
5. Step 5: Solve for x
   x = 603,442,514.12/28,141.50
6. Step 6: Final answer
   x = 21,443.15