Finding the Fourth Proportional to 142,443.02, 213,585.68 and 58,262.30

Step by Step Solution

1. Step 1: Write the proportion equation
   142,443.02 : 213,585.68 = 58,262.30 : x
2. Step 2: Convert to fraction form
   142,443.02/213,585.68 = 58,262.30/x
3. Step 3: Cross multiply
   142,443.02x = 213,585.68 × 58,262.30
4. Step 4: Simplify right side
   142,443.02x = 12,443,992,963.86
5. Step 5: Solve for x
   x = 12,443,992,963.86/142,443.02
6. Step 6: Final answer
   x = 87,361.20