Finding the Fourth Proportional to 76,620, 105,734.56 and 43,086.08

Step by Step Solution

1. Step 1: Write the proportion equation
   76,620 : 105,734.56 = 43,086.08 : x
2. Step 2: Convert to fraction form
   76,620/105,734.56 = 43,086.08/x
3. Step 3: Cross multiply
   76,620x = 105,734.56 × 43,086.08
4. Step 4: Simplify right side
   76,620x = 4,555,687,710.92
5. Step 5: Solve for x
   x = 4,555,687,710.92/76,620
6. Step 6: Final answer
   x = 59,458.21