Finding the Fourth Proportional to 123,614.42, 170,282.53 and 105,405.84

Step by Step Solution

1. Step 1: Write the proportion equation
   123,614.42 : 170,282.53 = 105,405.84 : x
2. Step 2: Convert to fraction form
   123,614.42/170,282.53 = 105,405.84/x
3. Step 3: Cross multiply
   123,614.42x = 170,282.53 × 105,405.84
4. Step 4: Simplify right side
   123,614.42x = 17,948,773,111.98
5. Step 5: Solve for x
   x = 17,948,773,111.98/123,614.42
6. Step 6: Final answer
   x = 145,199.67