Finding the Fourth Proportional to 200,300.16, 276,410.16 and 115,412.16

Step by Step Solution

1. Step 1: Write the proportion equation
   200,300.16 : 276,410.16 = 115,412.16 : x
2. Step 2: Convert to fraction form
   200,300.16/276,410.16 = 115,412.16/x
3. Step 3: Cross multiply
   200,300.16x = 276,410.16 × 115,412.16
4. Step 4: Simplify right side
   200,300.16x = 31,901,093,611.55
5. Step 5: Solve for x
   x = 31,901,093,611.55/200,300.16
6. Step 6: Final answer
   x = 159,266.44