Finding the Fourth Proportional to 78,930.80, 108,906.60 and 47,093.52

Step by Step Solution

1. Step 1: Write the proportion equation
   78,930.80 : 108,906.60 = 47,093.52 : x
2. Step 2: Convert to fraction form
   78,930.80/108,906.60 = 47,093.52/x
3. Step 3: Cross multiply
   78,930.80x = 108,906.60 × 47,093.52
4. Step 4: Simplify right side
   78,930.80x = 5,128,795,145.23
5. Step 5: Solve for x
   x = 5,128,795,145.23/78,930.80
6. Step 6: Final answer
   x = 64,978.38