Finding the Fourth Proportional to 78,738.21, 118,095.12 and 28,806.63

Step by Step Solution

1. Step 1: Write the proportion equation
   78,738.21 : 118,095.12 = 28,806.63 : x
2. Step 2: Convert to fraction form
   78,738.21/118,095.12 = 28,806.63/x
3. Step 3: Cross multiply
   78,738.21x = 118,095.12 × 28,806.63
4. Step 4: Simplify right side
   78,738.21x = 3,401,922,426.65
5. Step 5: Solve for x
   x = 3,401,922,426.65/78,738.21
6. Step 6: Final answer
   x = 43,205.48