Finding the Fourth Proportional to 123,243.76, 170,076.27 and 66,655

Step by Step Solution

1. Step 1: Write the proportion equation
   123,243.76 : 170,076.27 = 66,655 : x
2. Step 2: Convert to fraction form
   123,243.76/170,076.27 = 66,655/x
3. Step 3: Cross multiply
   123,243.76x = 170,076.27 × 66,655
4. Step 4: Simplify right side
   123,243.76x = 11,336,433,776.85
5. Step 5: Solve for x
   x = 11,336,433,776.85/123,243.76
6. Step 6: Final answer
   x = 91,983.84