Finding the Fourth Proportional to 121,227.84, 167,363.82 and 81,009.72

Step by Step Solution

1. Step 1: Write the proportion equation
   121,227.84 : 167,363.82 = 81,009.72 : x
2. Step 2: Convert to fraction form
   121,227.84/167,363.82 = 81,009.72/x
3. Step 3: Cross multiply
   121,227.84x = 167,363.82 × 81,009.72
4. Step 4: Simplify right side
   121,227.84x = 13,558,096,196.33
5. Step 5: Solve for x
   x = 13,558,096,196.33/121,227.84
6. Step 6: Final answer
   x = 111,839.79