Finding the Fourth Proportional to 78,766.84, 108,636.78 and 50,475.16

Step by Step Solution

1. Step 1: Write the proportion equation
   78,766.84 : 108,636.78 = 50,475.16 : x
2. Step 2: Convert to fraction form
   78,766.84/108,636.78 = 50,475.16/x
3. Step 3: Cross multiply
   78,766.84x = 108,636.78 × 50,475.16
4. Step 4: Simplify right side
   78,766.84x = 5,483,458,852.38
5. Step 5: Solve for x
   x = 5,483,458,852.38/78,766.84
6. Step 6: Final answer
   x = 69,616.34