Finding the Fourth Proportional to 142,118.72, 196,046.22 and 99,029.96

Step by Step Solution

1. Step 1: Write the proportion equation
   142,118.72 : 196,046.22 = 99,029.96 : x
2. Step 2: Convert to fraction form
   142,118.72/196,046.22 = 99,029.96/x
3. Step 3: Cross multiply
   142,118.72x = 196,046.22 × 99,029.96
4. Step 4: Simplify right side
   142,118.72x = 19,414,449,324.75
5. Step 5: Solve for x
   x = 19,414,449,324.75/142,118.72
6. Step 6: Final answer
   x = 136,607.26