Finding the Fourth Proportional to 80,336.48, 120,521.62 and 30,415.47

Step by Step Solution

1. Step 1: Write the proportion equation
   80,336.48 : 120,521.62 = 30,415.47 : x
2. Step 2: Convert to fraction form
   80,336.48/120,521.62 = 30,415.47/x
3. Step 3: Cross multiply
   80,336.48x = 120,521.62 × 30,415.47
4. Step 4: Simplify right side
   80,336.48x = 3,665,722,320.43
5. Step 5: Solve for x
   x = 3,665,722,320.43/80,336.48
6. Step 6: Final answer
   x = 45,629.61