Finding the Fourth Proportional to 142,118.30, 196,164.36 and 84,028.74

Step by Step Solution

1. Step 1: Write the proportion equation
   142,118.30 : 196,164.36 = 84,028.74 : x
2. Step 2: Convert to fraction form
   142,118.30/196,164.36 = 84,028.74/x
3. Step 3: Cross multiply
   142,118.30x = 196,164.36 × 84,028.74
4. Step 4: Simplify right side
   142,118.30x = 16,483,444,003.71
5. Step 5: Solve for x
   x = 16,483,444,003.71/142,118.30
6. Step 6: Final answer
   x = 115,983.97