Finding the Fourth Proportional to 78,418.69, 117,561.89 and 34,011.99

Step by Step Solution

1. Step 1: Write the proportion equation
   78,418.69 : 117,561.89 = 34,011.99 : x
2. Step 2: Convert to fraction form
   78,418.69/117,561.89 = 34,011.99/x
3. Step 3: Cross multiply
   78,418.69x = 117,561.89 × 34,011.99
4. Step 4: Simplify right side
   78,418.69x = 3,998,513,912.09
5. Step 5: Solve for x
   x = 3,998,513,912.09/78,418.69
6. Step 6: Final answer
   x = 50,989.30