Finding the Fourth Proportional to 279,738.32, 386,181.84 and 189,570.72

Step by Step Solution

1. Step 1: Write the proportion equation
   279,738.32 : 386,181.84 = 189,570.72 : x
2. Step 2: Convert to fraction form
   279,738.32/386,181.84 = 189,570.72/x
3. Step 3: Cross multiply
   279,738.32x = 386,181.84 × 189,570.72
4. Step 4: Simplify right side
   279,738.32x = 73,208,769,459.72
5. Step 5: Solve for x
   x = 73,208,769,459.72/279,738.32
6. Step 6: Final answer
   x = 261,704.47