Finding the Fourth Proportional to 78,423.99, 117,569.85 and 34,017.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,423.99 : 117,569.85 = 34,017.31 : x
2. Step 2: Convert to fraction form
   78,423.99/117,569.85 = 34,017.31/x
3. Step 3: Cross multiply
   78,423.99x = 117,569.85 × 34,017.31
4. Step 4: Simplify right side
   78,423.99x = 3,999,410,034.10
5. Step 5: Solve for x
   x = 3,999,410,034.10/78,423.99
6. Step 6: Final answer
   x = 50,997.28