Finding the Fourth Proportional to 78,414.37, 108,256.68 and 51,634.69

Step by Step Solution

1. Step 1: Write the proportion equation
   78,414.37 : 108,256.68 = 51,634.69 : x
2. Step 2: Convert to fraction form
   78,414.37/108,256.68 = 51,634.69/x
3. Step 3: Cross multiply
   78,414.37x = 108,256.68 × 51,634.69
4. Step 4: Simplify right side
   78,414.37x = 5,589,800,112.23
5. Step 5: Solve for x
   x = 5,589,800,112.23/78,414.37
6. Step 6: Final answer
   x = 71,285.40