Finding the Fourth Proportional to 109,436.89, 164,106.13 and 105,992.36

Step by Step Solution

1. Step 1: Write the proportion equation
   109,436.89 : 164,106.13 = 105,992.36 : x
2. Step 2: Convert to fraction form
   109,436.89/164,106.13 = 105,992.36/x
3. Step 3: Cross multiply
   109,436.89x = 164,106.13 × 105,992.36
4. Step 4: Simplify right side
   109,436.89x = 17,393,996,362.78
5. Step 5: Solve for x
   x = 17,393,996,362.78/109,436.89
6. Step 6: Final answer
   x = 158,940.89