Finding the Fourth Proportional to 128,404.10, 192,836.55 and 93,383.30

Step by Step Solution

1. Step 1: Write the proportion equation
   128,404.10 : 192,836.55 = 93,383.30 : x
2. Step 2: Convert to fraction form
   128,404.10/192,836.55 = 93,383.30/x
3. Step 3: Cross multiply
   128,404.10x = 192,836.55 × 93,383.30
4. Step 4: Simplify right side
   128,404.10x = 18,007,713,399.62
5. Step 5: Solve for x
   x = 18,007,713,399.62/128,404.10
6. Step 6: Final answer
   x = 140,242.51