Finding the Fourth Proportional to 80,288.18, 120,366.48 and 30,339.86

Step by Step Solution

1. Step 1: Write the proportion equation
   80,288.18 : 120,366.48 = 30,339.86 : x
2. Step 2: Convert to fraction form
   80,288.18/120,366.48 = 30,339.86/x
3. Step 3: Cross multiply
   80,288.18x = 120,366.48 × 30,339.86
4. Step 4: Simplify right side
   80,288.18x = 3,651,902,151.89
5. Step 5: Solve for x
   x = 3,651,902,151.89/80,288.18
6. Step 6: Final answer
   x = 45,484.93