Finding the Fourth Proportional to 370,144.32, 510,789.72 and 206,802.06

Step by Step Solution

1. Step 1: Write the proportion equation
   370,144.32 : 510,789.72 = 206,802.06 : x
2. Step 2: Convert to fraction form
   370,144.32/510,789.72 = 206,802.06/x
3. Step 3: Cross multiply
   370,144.32x = 510,789.72 × 206,802.06
4. Step 4: Simplify right side
   370,144.32x = 105,632,366,322.82
5. Step 5: Solve for x
   x = 105,632,366,322.82/370,144.32
6. Step 6: Final answer
   x = 285,381.57