Finding the Fourth Proportional to 78,833.54, 108,908.77 and 51,674.09

Step by Step Solution

1. Step 1: Write the proportion equation
   78,833.54 : 108,908.77 = 51,674.09 : x
2. Step 2: Convert to fraction form
   78,833.54/108,908.77 = 51,674.09/x
3. Step 3: Cross multiply
   78,833.54x = 108,908.77 × 51,674.09
4. Step 4: Simplify right side
   78,833.54x = 5,627,761,725.86
5. Step 5: Solve for x
   x = 5,627,761,725.86/78,833.54
6. Step 6: Final answer
   x = 71,387.91