Finding the Fourth Proportional to 76,805, 105,991.94 and 43,271.08

Step by Step Solution

1. Step 1: Write the proportion equation
   76,805 : 105,991.94 = 43,271.08 : x
2. Step 2: Convert to fraction form
   76,805/105,991.94 = 43,271.08/x
3. Step 3: Cross multiply
   76,805x = 105,991.94 × 43,271.08
4. Step 4: Simplify right side
   76,805x = 4,586,385,715.10
5. Step 5: Solve for x
   x = 4,586,385,715.10/76,805
6. Step 6: Final answer
   x = 59,714.68