Finding the Fourth Proportional to 165,090.72, 247,637.16 and 40,431.72

Step by Step Solution

1. Step 1: Write the proportion equation
   165,090.72 : 247,637.16 = 40,431.72 : x
2. Step 2: Convert to fraction form
   165,090.72/247,637.16 = 40,431.72/x
3. Step 3: Cross multiply
   165,090.72x = 247,637.16 × 40,431.72
4. Step 4: Simplify right side
   165,090.72x = 10,012,396,314.72
5. Step 5: Solve for x
   x = 10,012,396,314.72/165,090.72
6. Step 6: Final answer
   x = 60,647.84