Finding the Fourth Proportional to 76,829.72, 105,783.74 and 65,322.00

Step by Step Solution

1. Step 1: Write the proportion equation
   76,829.72 : 105,783.74 = 65,322.00 : x
2. Step 2: Convert to fraction form
   76,829.72/105,783.74 = 65,322.00/x
3. Step 3: Cross multiply
   76,829.72x = 105,783.74 × 65,322.00
4. Step 4: Simplify right side
   76,829.72x = 6,910,004,935.36
5. Step 5: Solve for x
   x = 6,910,004,935.36/76,829.72
6. Step 6: Final answer
   x = 89,939.22