Finding the Fourth Proportional to 142,398.72, 213,596.01 and 42,556.68

Step by Step Solution

1. Step 1: Write the proportion equation
   142,398.72 : 213,596.01 = 42,556.68 : x
2. Step 2: Convert to fraction form
   142,398.72/213,596.01 = 42,556.68/x
3. Step 3: Cross multiply
   142,398.72x = 213,596.01 × 42,556.68
4. Step 4: Simplify right side
   142,398.72x = 9,089,937,046.85
5. Step 5: Solve for x
   x = 9,089,937,046.85/142,398.72
6. Step 6: Final answer
   x = 63,834.40