Finding the Fourth Proportional to 142,426.65, 213,714.25 and 103,306.69

Step by Step Solution

1. Step 1: Write the proportion equation
   142,426.65 : 213,714.25 = 103,306.69 : x
2. Step 2: Convert to fraction form
   142,426.65/213,714.25 = 103,306.69/x
3. Step 3: Cross multiply
   142,426.65x = 213,714.25 × 103,306.69
4. Step 4: Simplify right side
   142,426.65x = 22,078,111,782.21
5. Step 5: Solve for x
   x = 22,078,111,782.21/142,426.65
6. Step 6: Final answer
   x = 155,013.91