Finding the Fourth Proportional to 76,829.05, 105,782.83 and 65,321.33

Step by Step Solution

1. Step 1: Write the proportion equation
   76,829.05 : 105,782.83 = 65,321.33 : x
2. Step 2: Convert to fraction form
   76,829.05/105,782.83 = 65,321.33/x
3. Step 3: Cross multiply
   76,829.05x = 105,782.83 × 65,321.33
4. Step 4: Simplify right side
   76,829.05x = 6,909,875,146.76
5. Step 5: Solve for x
   x = 6,909,875,146.76/76,829.05
6. Step 6: Final answer
   x = 89,938.31