Finding the Fourth Proportional to 162,721.36, 224,544.84 and 91,100.72

Step by Step Solution

1. Step 1: Write the proportion equation
   162,721.36 : 224,544.84 = 91,100.72 : x
2. Step 2: Convert to fraction form
   162,721.36/224,544.84 = 91,100.72/x
3. Step 3: Cross multiply
   162,721.36x = 224,544.84 × 91,100.72
4. Step 4: Simplify right side
   162,721.36x = 20,456,196,596.28
5. Step 5: Solve for x
   x = 20,456,196,596.28/162,721.36
6. Step 6: Final answer
   x = 125,713.04