Finding the Fourth Proportional to 78,767.05, 118,168.20 and 28,846.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,767.05 : 118,168.20 = 28,846.15 : x
2. Step 2: Convert to fraction form
   78,767.05/118,168.20 = 28,846.15/x
3. Step 3: Cross multiply
   78,767.05x = 118,168.20 × 28,846.15
4. Step 4: Simplify right side
   78,767.05x = 3,408,697,622.43
5. Step 5: Solve for x
   x = 3,408,697,622.43/78,767.05
6. Step 6: Final answer
   x = 43,275.68