Finding the Fourth Proportional to 28,514.82, 42,783.18 and 20,089.42

Step by Step Solution

1. Step 1: Write the proportion equation
   28,514.82 : 42,783.18 = 20,089.42 : x
2. Step 2: Convert to fraction form
   28,514.82/42,783.18 = 20,089.42/x
3. Step 3: Cross multiply
   28,514.82x = 42,783.18 × 20,089.42
4. Step 4: Simplify right side
   28,514.82x = 859,489,271.96
5. Step 5: Solve for x
   x = 859,489,271.96/28,514.82
6. Step 6: Final answer
   x = 30,141.84