Finding the Fourth Proportional to 78,738.34, 118,072.88 and 28,805.48

Step by Step Solution

1. Step 1: Write the proportion equation
   78,738.34 : 118,072.88 = 28,805.48 : x
2. Step 2: Convert to fraction form
   78,738.34/118,072.88 = 28,805.48/x
3. Step 3: Cross multiply
   78,738.34x = 118,072.88 × 28,805.48
4. Step 4: Simplify right side
   78,738.34x = 3,401,146,134.54
5. Step 5: Solve for x
   x = 3,401,146,134.54/78,738.34
6. Step 6: Final answer
   x = 43,195.55