Finding the Fourth Proportional to 123,446.72, 170,355.68 and 69,749.12

Step by Step Solution

1. Step 1: Write the proportion equation
   123,446.72 : 170,355.68 = 69,749.12 : x
2. Step 2: Convert to fraction form
   123,446.72/170,355.68 = 69,749.12/x
3. Step 3: Cross multiply
   123,446.72x = 170,355.68 × 69,749.12
4. Step 4: Simplify right side
   123,446.72x = 11,882,158,767.00
5. Step 5: Solve for x
   x = 11,882,158,767.00/123,446.72
6. Step 6: Final answer
   x = 96,253.34