Finding the Fourth Proportional to 142,158.07, 196,018.20 and 116,235.74

Step by Step Solution

1. Step 1: Write the proportion equation
   142,158.07 : 196,018.20 = 116,235.74 : x
2. Step 2: Convert to fraction form
   142,158.07/196,018.20 = 116,235.74/x
3. Step 3: Cross multiply
   142,158.07x = 196,018.20 × 116,235.74
4. Step 4: Simplify right side
   142,158.07x = 22,784,321,020.51
5. Step 5: Solve for x
   x = 22,784,321,020.51/142,158.07
6. Step 6: Final answer
   x = 160,274.56