Finding the Fourth Proportional to 142,288.02, 213,463.71 and 42,449.94

Step by Step Solution

1. Step 1: Write the proportion equation
   142,288.02 : 213,463.71 = 42,449.94 : x
2. Step 2: Convert to fraction form
   142,288.02/213,463.71 = 42,449.94/x
3. Step 3: Cross multiply
   142,288.02x = 213,463.71 × 42,449.94
4. Step 4: Simplify right side
   142,288.02x = 9,061,521,681.68
5. Step 5: Solve for x
   x = 9,061,521,681.68/142,288.02
6. Step 6: Final answer
   x = 63,684.36