Finding the Fourth Proportional to 123,314.67, 170,019.36 and 100,630.62

Step by Step Solution

1. Step 1: Write the proportion equation
   123,314.67 : 170,019.36 = 100,630.62 : x
2. Step 2: Convert to fraction form
   123,314.67/170,019.36 = 100,630.62/x
3. Step 3: Cross multiply
   123,314.67x = 170,019.36 × 100,630.62
4. Step 4: Simplify right side
   123,314.67x = 17,109,153,608.80
5. Step 5: Solve for x
   x = 17,109,153,608.80/123,314.67
6. Step 6: Final answer
   x = 138,743.86