Finding the Fourth Proportional to 142,386.48, 213,642.24 and 67,560.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,386.48 : 213,642.24 = 67,560.72 : x
2. Step 2: Convert to fraction form
   142,386.48/213,642.24 = 67,560.72/x
3. Step 3: Cross multiply
   142,386.48x = 213,642.24 × 67,560.72
4. Step 4: Simplify right side
   142,386.48x = 14,433,823,556.81
5. Step 5: Solve for x
   x = 14,433,823,556.81/142,386.48
6. Step 6: Final answer
   x = 101,370.75