Finding the Fourth Proportional to 123,654.69, 170,643.48 and 69,938.56

Step by Step Solution

1. Step 1: Write the proportion equation
   123,654.69 : 170,643.48 = 69,938.56 : x
2. Step 2: Convert to fraction form
   123,654.69/170,643.48 = 69,938.56/x
3. Step 3: Cross multiply
   123,654.69x = 170,643.48 × 69,938.56
4. Step 4: Simplify right side
   123,654.69x = 11,934,558,061.68
5. Step 5: Solve for x
   x = 11,934,558,061.68/123,654.69
6. Step 6: Final answer
   x = 96,515.21