Finding the Fourth Proportional to 142,399.30, 213,426.15 and 63,429.70

Step by Step Solution

1. Step 1: Write the proportion equation
   142,399.30 : 213,426.15 = 63,429.70 : x
2. Step 2: Convert to fraction form
   142,399.30/213,426.15 = 63,429.70/x
3. Step 3: Cross multiply
   142,399.30x = 213,426.15 × 63,429.70
4. Step 4: Simplify right side
   142,399.30x = 13,537,556,666.66
5. Step 5: Solve for x
   x = 13,537,556,666.66/142,399.30
6. Step 6: Final answer
   x = 95,067.58