Finding the Fourth Proportional to 78,768.64, 118,086.54 and 34,362.82

Step by Step Solution

1. Step 1: Write the proportion equation
   78,768.64 : 118,086.54 = 34,362.82 : x
2. Step 2: Convert to fraction form
   78,768.64/118,086.54 = 34,362.82/x
3. Step 3: Cross multiply
   78,768.64x = 118,086.54 × 34,362.82
4. Step 4: Simplify right side
   78,768.64x = 4,057,786,518.44
5. Step 5: Solve for x
   x = 4,057,786,518.44/78,768.64
6. Step 6: Final answer
   x = 51,515.25