Finding the Fourth Proportional to 279,642.38, 385,956.50 and 164,913.98

Step by Step Solution

1. Step 1: Write the proportion equation
   279,642.38 : 385,956.50 = 164,913.98 : x
2. Step 2: Convert to fraction form
   279,642.38/385,956.50 = 164,913.98/x
3. Step 3: Cross multiply
   279,642.38x = 385,956.50 × 164,913.98
4. Step 4: Simplify right side
   279,642.38x = 63,649,619,767.52
5. Step 5: Solve for x
   x = 63,649,619,767.52/279,642.38
6. Step 6: Final answer
   x = 227,610.78