Finding the Fourth Proportional to 78,111.69, 117,354.46 and 50,086.65

Step by Step Solution

1. Step 1: Write the proportion equation
   78,111.69 : 117,354.46 = 50,086.65 : x
2. Step 2: Convert to fraction form
   78,111.69/117,354.46 = 50,086.65/x
3. Step 3: Cross multiply
   78,111.69x = 117,354.46 × 50,086.65
4. Step 4: Simplify right side
   78,111.69x = 5,877,892,266.65
5. Step 5: Solve for x
   x = 5,877,892,266.65/78,111.69
6. Step 6: Final answer
   x = 75,249.84