Finding the Fourth Proportional to 120,997.72, 181,515.94 and 42,134.36

Step by Step Solution

1. Step 1: Write the proportion equation
   120,997.72 : 181,515.94 = 42,134.36 : x
2. Step 2: Convert to fraction form
   120,997.72/181,515.94 = 42,134.36/x
3. Step 3: Cross multiply
   120,997.72x = 181,515.94 × 42,134.36
4. Step 4: Simplify right side
   120,997.72x = 7,648,057,961.70
5. Step 5: Solve for x
   x = 7,648,057,961.70/120,997.72
6. Step 6: Final answer
   x = 63,208.28