Finding the Fourth Proportional to 76,708.56, 105,856.56 and 43,174.56

Step by Step Solution

1. Step 1: Write the proportion equation
   76,708.56 : 105,856.56 = 43,174.56 : x
2. Step 2: Convert to fraction form
   76,708.56/105,856.56 = 43,174.56/x
3. Step 3: Cross multiply
   76,708.56x = 105,856.56 × 43,174.56
4. Step 4: Simplify right side
   76,708.56x = 4,570,310,401.11
5. Step 5: Solve for x
   x = 4,570,310,401.11/76,708.56
6. Step 6: Final answer
   x = 59,580.19