Finding the Fourth Proportional to 123,123.56, 169,912.02 and 69,408.60

Step by Step Solution

1. Step 1: Write the proportion equation
   123,123.56 : 169,912.02 = 69,408.60 : x
2. Step 2: Convert to fraction form
   123,123.56/169,912.02 = 69,408.60/x
3. Step 3: Cross multiply
   123,123.56x = 169,912.02 × 69,408.60
4. Step 4: Simplify right side
   123,123.56x = 11,793,355,431.37
5. Step 5: Solve for x
   x = 11,793,355,431.37/123,123.56
6. Step 6: Final answer
   x = 95,784.72