Finding the Fourth Proportional to 123,377.40, 170,251.30 and 69,667.72

Step by Step Solution

1. Step 1: Write the proportion equation
   123,377.40 : 170,251.30 = 69,667.72 : x
2. Step 2: Convert to fraction form
   123,377.40/170,251.30 = 69,667.72/x
3. Step 3: Cross multiply
   123,377.40x = 170,251.30 × 69,667.72
4. Step 4: Simplify right side
   123,377.40x = 11,861,019,898.04
5. Step 5: Solve for x
   x = 11,861,019,898.04/123,377.40
6. Step 6: Final answer
   x = 96,136.08