Finding the Fourth Proportional to 109,754.34, 164,362.81 and 90,662.16

Step by Step Solution

1. Step 1: Write the proportion equation
   109,754.34 : 164,362.81 = 90,662.16 : x
2. Step 2: Convert to fraction form
   109,754.34/164,362.81 = 90,662.16/x
3. Step 3: Cross multiply
   109,754.34x = 164,362.81 × 90,662.16
4. Step 4: Simplify right side
   109,754.34x = 14,901,487,378.27
5. Step 5: Solve for x
   x = 14,901,487,378.27/109,754.34
6. Step 6: Final answer
   x = 135,771.28