Finding the Fourth Proportional to 142,468.74, 213,624.13 and 58,287.98

Step by Step Solution

1. Step 1: Write the proportion equation
   142,468.74 : 213,624.13 = 58,287.98 : x
2. Step 2: Convert to fraction form
   142,468.74/213,624.13 = 58,287.98/x
3. Step 3: Cross multiply
   142,468.74x = 213,624.13 × 58,287.98
4. Step 4: Simplify right side
   142,468.74x = 12,451,719,016.96
5. Step 5: Solve for x
   x = 12,451,719,016.96/142,468.74
6. Step 6: Final answer
   x = 87,399.66