Finding the Fourth Proportional to 123,613.42, 170,281.15 and 105,404.84

Step by Step Solution

1. Step 1: Write the proportion equation
   123,613.42 : 170,281.15 = 105,404.84 : x
2. Step 2: Convert to fraction form
   123,613.42/170,281.15 = 105,404.84/x
3. Step 3: Cross multiply
   123,613.42x = 170,281.15 × 105,404.84
4. Step 4: Simplify right side
   123,613.42x = 17,948,458,445.14
5. Step 5: Solve for x
   x = 17,948,458,445.14/123,613.42
6. Step 6: Final answer
   x = 145,198.30