Finding the Fourth Proportional to 80,148.17, 120,137.47 and 30,206.63

Step by Step Solution

1. Step 1: Write the proportion equation
   80,148.17 : 120,137.47 = 30,206.63 : x
2. Step 2: Convert to fraction form
   80,148.17/120,137.47 = 30,206.63/x
3. Step 3: Cross multiply
   80,148.17x = 120,137.47 × 30,206.63
4. Step 4: Simplify right side
   80,148.17x = 3,628,948,105.43
5. Step 5: Solve for x
   x = 3,628,948,105.43/80,148.17
6. Step 6: Final answer
   x = 45,277.99