Finding the Fourth Proportional to 435,159, 653,739.12 and 309,105.72

Step by Step Solution

1. Step 1: Write the proportion equation
   435,159 : 653,739.12 = 309,105.72 : x
2. Step 2: Convert to fraction form
   435,159/653,739.12 = 309,105.72/x
3. Step 3: Cross multiply
   435,159x = 653,739.12 × 309,105.72
4. Step 4: Simplify right side
   435,159x = 202,074,501,379.77
5. Step 5: Solve for x
   x = 202,074,501,379.77/435,159
6. Step 6: Final answer
   x = 464,369.35