Finding the Fourth Proportional to 142,469.25, 213,624.90 and 58,288.47

Step by Step Solution

1. Step 1: Write the proportion equation
   142,469.25 : 213,624.90 = 58,288.47 : x
2. Step 2: Convert to fraction form
   142,469.25/213,624.90 = 58,288.47/x
3. Step 3: Cross multiply
   142,469.25x = 213,624.90 × 58,288.47
4. Step 4: Simplify right side
   142,469.25x = 12,451,868,574.90
5. Step 5: Solve for x
   x = 12,451,868,574.90/142,469.25
6. Step 6: Final answer
   x = 87,400.39