Finding the Fourth Proportional to 128,541.30, 192,581.55 and 110,109.30

Step by Step Solution

1. Step 1: Write the proportion equation
   128,541.30 : 192,581.55 = 110,109.30 : x
2. Step 2: Convert to fraction form
   128,541.30/192,581.55 = 110,109.30/x
3. Step 3: Cross multiply
   128,541.30x = 192,581.55 × 110,109.30
4. Step 4: Simplify right side
   128,541.30x = 21,205,019,663.42
5. Step 5: Solve for x
   x = 21,205,019,663.42/128,541.30
6. Step 6: Final answer
   x = 164,966.59