Finding the Fourth Proportional to 142,111.42, 213,167.14 and 42,273.05

Step by Step Solution

1. Step 1: Write the proportion equation
   142,111.42 : 213,167.14 = 42,273.05 : x
2. Step 2: Convert to fraction form
   142,111.42/213,167.14 = 42,273.05/x
3. Step 3: Cross multiply
   142,111.42x = 213,167.14 × 42,273.05
4. Step 4: Simplify right side
   142,111.42x = 9,011,223,996.06
5. Step 5: Solve for x
   x = 9,011,223,996.06/142,111.42
6. Step 6: Final answer
   x = 63,409.57