Finding the Fourth Proportional to 76,662.96, 105,794.70 and 43,128.96

Step by Step Solution

1. Step 1: Write the proportion equation
   76,662.96 : 105,794.70 = 43,128.96 : x
2. Step 2: Convert to fraction form
   76,662.96/105,794.70 = 43,128.96/x
3. Step 3: Cross multiply
   76,662.96x = 105,794.70 × 43,128.96
4. Step 4: Simplify right side
   76,662.96x = 4,562,815,384.51
5. Step 5: Solve for x
   x = 4,562,815,384.51/76,662.96
6. Step 6: Final answer
   x = 59,517.86