Finding the Fourth Proportional to 142,389.63, 213,584.18 and 58,189.32

Step by Step Solution

1. Step 1: Write the proportion equation
   142,389.63 : 213,584.18 = 58,189.32 : x
2. Step 2: Convert to fraction form
   142,389.63/213,584.18 = 58,189.32/x
3. Step 3: Cross multiply
   142,389.63x = 213,584.18 × 58,189.32
4. Step 4: Simplify right side
   142,389.63x = 12,428,317,906.01
5. Step 5: Solve for x
   x = 12,428,317,906.01/142,389.63
6. Step 6: Final answer
   x = 87,283.87