Finding the Fourth Proportional to 78,456.07, 117,647.13 and 28,500.94

Step by Step Solution

1. Step 1: Write the proportion equation
   78,456.07 : 117,647.13 = 28,500.94 : x
2. Step 2: Convert to fraction form
   78,456.07/117,647.13 = 28,500.94/x
3. Step 3: Cross multiply
   78,456.07x = 117,647.13 × 28,500.94
4. Step 4: Simplify right side
   78,456.07x = 3,353,053,793.30
5. Step 5: Solve for x
   x = 3,353,053,793.30/78,456.07
6. Step 6: Final answer
   x = 42,737.98