Finding the Fourth Proportional to 142,405.42, 213,440.46 and 58,112.98

Step by Step Solution

1. Step 1: Write the proportion equation
   142,405.42 : 213,440.46 = 58,112.98 : x
2. Step 2: Convert to fraction form
   142,405.42/213,440.46 = 58,112.98/x
3. Step 3: Cross multiply
   142,405.42x = 213,440.46 × 58,112.98
4. Step 4: Simplify right side
   142,405.42x = 12,403,661,183.17
5. Step 5: Solve for x
   x = 12,403,661,183.17/142,405.42
6. Step 6: Final answer
   x = 87,101.05