Finding the Fourth Proportional to 128,074.46, 176,682.72 and 82,766.69

Step by Step Solution

1. Step 1: Write the proportion equation
   128,074.46 : 176,682.72 = 82,766.69 : x
2. Step 2: Convert to fraction form
   128,074.46/176,682.72 = 82,766.69/x
3. Step 3: Cross multiply
   128,074.46x = 176,682.72 × 82,766.69
4. Step 4: Simplify right side
   128,074.46x = 14,623,443,914.60
5. Step 5: Solve for x
   x = 14,623,443,914.60/128,074.46
6. Step 6: Final answer
   x = 114,179.24