Finding the Fourth Proportional to 78,069, 117,118.30 and 31,325.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,069 : 117,118.30 = 31,325.56 : x
2. Step 2: Convert to fraction form
   78,069/117,118.30 = 31,325.56/x
3. Step 3: Cross multiply
   78,069x = 117,118.30 × 31,325.56
4. Step 4: Simplify right side
   78,069x = 3,668,796,333.75
5. Step 5: Solve for x
   x = 3,668,796,333.75/78,069
6. Step 6: Final answer
   x = 46,994.28