Finding the Fourth Proportional to 142,314.47, 213,028.83 and 89,613.23

Step by Step Solution

1. Step 1: Write the proportion equation
   142,314.47 : 213,028.83 = 89,613.23 : x
2. Step 2: Convert to fraction form
   142,314.47/213,028.83 = 89,613.23/x
3. Step 3: Cross multiply
   142,314.47x = 213,028.83 × 89,613.23
4. Step 4: Simplify right side
   142,314.47x = 19,090,202,071.99
5. Step 5: Solve for x
   x = 19,090,202,071.99/142,314.47
6. Step 6: Final answer
   x = 134,140.98