Finding the Fourth Proportional to 142,654.05, 213,992.01 and 42,806.97

Step by Step Solution

1. Step 1: Write the proportion equation
   142,654.05 : 213,992.01 = 42,806.97 : x
2. Step 2: Convert to fraction form
   142,654.05/213,992.01 = 42,806.97/x
3. Step 3: Cross multiply
   142,654.05x = 213,992.01 × 42,806.97
4. Step 4: Simplify right side
   142,654.05x = 9,160,349,552.31
5. Step 5: Solve for x
   x = 9,160,349,552.31/142,654.05
6. Step 6: Final answer
   x = 64,213.74