Finding the Fourth Proportional to 279,520.14, 385,738.72 and 152,196.50

Step by Step Solution

1. Step 1: Write the proportion equation
   279,520.14 : 385,738.72 = 152,196.50 : x
2. Step 2: Convert to fraction form
   279,520.14/385,738.72 = 152,196.50/x
3. Step 3: Cross multiply
   279,520.14x = 385,738.72 × 152,196.50
4. Step 4: Simplify right side
   279,520.14x = 58,708,083,098.48
5. Step 5: Solve for x
   x = 58,708,083,098.48/279,520.14
6. Step 6: Final answer
   x = 210,031.67