Finding the Fourth Proportional to 309,613.72, 464,410.84 and 87,997.72

Step by Step Solution

1. Step 1: Write the proportion equation
   309,613.72 : 464,410.84 = 87,997.72 : x
2. Step 2: Convert to fraction form
   309,613.72/464,410.84 = 87,997.72/x
3. Step 3: Cross multiply
   309,613.72x = 464,410.84 × 87,997.72
4. Step 4: Simplify right side
   309,613.72x = 40,867,095,063.28
5. Step 5: Solve for x
   x = 40,867,095,063.28/309,613.72
6. Step 6: Final answer
   x = 131,993.81