Finding the Fourth Proportional to 236,100.08, 325,808.61 and 128,667.78

Step by Step Solution

1. Step 1: Write the proportion equation
   236,100.08 : 325,808.61 = 128,667.78 : x
2. Step 2: Convert to fraction form
   236,100.08/325,808.61 = 128,667.78/x
3. Step 3: Cross multiply
   236,100.08x = 325,808.61 × 128,667.78
4. Step 4: Simplify right side
   236,100.08x = 41,921,070,553.59
5. Step 5: Solve for x
   x = 41,921,070,553.59/236,100.08
6. Step 6: Final answer
   x = 177,556.36