Finding the Fourth Proportional to 78,789.72, 118,184.97 and 28,873.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,789.72 : 118,184.97 = 28,873.50 : x
2. Step 2: Convert to fraction form
   78,789.72/118,184.97 = 28,873.50/x
3. Step 3: Cross multiply
   78,789.72x = 118,184.97 × 28,873.50
4. Step 4: Simplify right side
   78,789.72x = 3,412,413,731.30
5. Step 5: Solve for x
   x = 3,412,413,731.30/78,789.72
6. Step 6: Final answer
   x = 43,310.39