Finding the Fourth Proportional to 127,408.42, 191,087.52 and 121,086.10

Step by Step Solution

1. Step 1: Write the proportion equation
   127,408.42 : 191,087.52 = 121,086.10 : x
2. Step 2: Convert to fraction form
   127,408.42/191,087.52 = 121,086.10/x
3. Step 3: Cross multiply
   127,408.42x = 191,087.52 × 121,086.10
4. Step 4: Simplify right side
   127,408.42x = 23,138,042,555.47
5. Step 5: Solve for x
   x = 23,138,042,555.47/127,408.42
6. Step 6: Final answer
   x = 181,605.29