Finding the Fourth Proportional to 80,609.15, 120,914.89 and 30,691.98

Step by Step Solution

1. Step 1: Write the proportion equation
   80,609.15 : 120,914.89 = 30,691.98 : x
2. Step 2: Convert to fraction form
   80,609.15/120,914.89 = 30,691.98/x
3. Step 3: Cross multiply
   80,609.15x = 120,914.89 × 30,691.98
4. Step 4: Simplify right side
   80,609.15x = 3,711,117,308.85
5. Step 5: Solve for x
   x = 3,711,117,308.85/80,609.15
6. Step 6: Final answer
   x = 46,038.41