Finding the Fourth Proportional to 80,354.50, 120,530.39 and 19,565.42

Step by Step Solution

1. Step 1: Write the proportion equation
   80,354.50 : 120,530.39 = 19,565.42 : x
2. Step 2: Convert to fraction form
   80,354.50/120,530.39 = 19,565.42/x
3. Step 3: Cross multiply
   80,354.50x = 120,530.39 × 19,565.42
4. Step 4: Simplify right side
   80,354.50x = 2,358,227,002.63
5. Step 5: Solve for x
   x = 2,358,227,002.63/80,354.50
6. Step 6: Final answer
   x = 29,347.79