Finding the Fourth Proportional to 78,939.78, 118,493.96 and 33,983.39

Step by Step Solution

1. Step 1: Write the proportion equation
   78,939.78 : 118,493.96 = 33,983.39 : x
2. Step 2: Convert to fraction form
   78,939.78/118,493.96 = 33,983.39/x
3. Step 3: Cross multiply
   78,939.78x = 118,493.96 × 33,983.39
4. Step 4: Simplify right side
   78,939.78x = 4,026,826,455.32
5. Step 5: Solve for x
   x = 4,026,826,455.32/78,939.78
6. Step 6: Final answer
   x = 51,011.37