Finding the Fourth Proportional to 121,936.10, 182,667.42 and 89,856.89

Step by Step Solution

1. Step 1: Write the proportion equation
   121,936.10 : 182,667.42 = 89,856.89 : x
2. Step 2: Convert to fraction form
   121,936.10/182,667.42 = 89,856.89/x
3. Step 3: Cross multiply
   121,936.10x = 182,667.42 × 89,856.89
4. Step 4: Simplify right side
   121,936.10x = 16,413,925,352.19
5. Step 5: Solve for x
   x = 16,413,925,352.19/121,936.10
6. Step 6: Final answer
   x = 134,610.88