Finding the Fourth Proportional to 123,717.79, 185,669.98 and 90,523.49

Step by Step Solution

1. Step 1: Write the proportion equation
   123,717.79 : 185,669.98 = 90,523.49 : x
2. Step 2: Convert to fraction form
   123,717.79/185,669.98 = 90,523.49/x
3. Step 3: Cross multiply
   123,717.79x = 185,669.98 × 90,523.49
4. Step 4: Simplify right side
   123,717.79x = 16,807,494,815.70
5. Step 5: Solve for x
   x = 16,807,494,815.70/123,717.79
6. Step 6: Final answer
   x = 135,853.50