Finding the Fourth Proportional to 117,311.31, 161,847.18 and 77,046.89

Step by Step Solution

1. Step 1: Write the proportion equation
   117,311.31 : 161,847.18 = 77,046.89 : x
2. Step 2: Convert to fraction form
   117,311.31/161,847.18 = 77,046.89/x
3. Step 3: Cross multiply
   117,311.31x = 161,847.18 × 77,046.89
4. Step 4: Simplify right side
   117,311.31x = 12,469,821,065.03
5. Step 5: Solve for x
   x = 12,469,821,065.03/117,311.31
6. Step 6: Final answer
   x = 106,296.84