Finding the Fourth Proportional to 121,016.16, 181,654.92 and 91,753.56

Step by Step Solution

1. Step 1: Write the proportion equation
   121,016.16 : 181,654.92 = 91,753.56 : x
2. Step 2: Convert to fraction form
   121,016.16/181,654.92 = 91,753.56/x
3. Step 3: Cross multiply
   121,016.16x = 181,654.92 × 91,753.56
4. Step 4: Simplify right side
   121,016.16x = 16,667,485,601.52
5. Step 5: Solve for x
   x = 16,667,485,601.52/121,016.16
6. Step 6: Final answer
   x = 137,729.42