Finding the Fourth Proportional to 103,086.77, 142,260.23 and 67,255.61

Step by Step Solution

1. Step 1: Write the proportion equation
   103,086.77 : 142,260.23 = 67,255.61 : x
2. Step 2: Convert to fraction form
   103,086.77/142,260.23 = 67,255.61/x
3. Step 3: Cross multiply
   103,086.77x = 142,260.23 × 67,255.61
4. Step 4: Simplify right side
   103,086.77x = 9,567,798,004.23
5. Step 5: Solve for x
   x = 9,567,798,004.23/103,086.77
6. Step 6: Final answer
   x = 92,813.06