Finding the Fourth Proportional to 76,682, 105,784.06 and 49,450.89

Step by Step Solution

1. Step 1: Write the proportion equation
   76,682 : 105,784.06 = 49,450.89 : x
2. Step 2: Convert to fraction form
   76,682/105,784.06 = 49,450.89/x
3. Step 3: Cross multiply
   76,682x = 105,784.06 × 49,450.89
4. Step 4: Simplify right side
   76,682x = 5,231,115,914.81
5. Step 5: Solve for x
   x = 5,231,115,914.81/76,682
6. Step 6: Final answer
   x = 68,218.30