Finding the Fourth Proportional to 123,639.62, 170,604.72 and 69,191.53

Step by Step Solution

1. Step 1: Write the proportion equation
   123,639.62 : 170,604.72 = 69,191.53 : x
2. Step 2: Convert to fraction form
   123,639.62/170,604.72 = 69,191.53/x
3. Step 3: Cross multiply
   123,639.62x = 170,604.72 × 69,191.53
4. Step 4: Simplify right side
   123,639.62x = 11,804,401,602.02
5. Step 5: Solve for x
   x = 11,804,401,602.02/123,639.62
6. Step 6: Final answer
   x = 95,474.26