Finding the Fourth Proportional to 303,404.09, 455,196.69 and 90,179.09

Step by Step Solution

1. Step 1: Write the proportion equation
   303,404.09 : 455,196.69 = 90,179.09 : x
2. Step 2: Convert to fraction form
   303,404.09/455,196.69 = 90,179.09/x
3. Step 3: Cross multiply
   303,404.09x = 455,196.69 × 90,179.09
4. Step 4: Simplify right side
   303,404.09x = 41,049,220,999.23
5. Step 5: Solve for x
   x = 41,049,220,999.23/303,404.09
6. Step 6: Final answer
   x = 135,295.54