Finding the Fourth Proportional to 203,699, 305,556.78 and 97,028.12

Step by Step Solution

1. Step 1: Write the proportion equation
   203,699 : 305,556.78 = 97,028.12 : x
2. Step 2: Convert to fraction form
   203,699/305,556.78 = 97,028.12/x
3. Step 3: Cross multiply
   203,699x = 305,556.78 × 97,028.12
4. Step 4: Simplify right side
   203,699x = 29,647,599,916.65
5. Step 5: Solve for x
   x = 29,647,599,916.65/203,699
6. Step 6: Final answer
   x = 145,546.12