Finding the Fourth Proportional to 279,456.14, 385,648.37 and 156,931.52

Step by Step Solution

1. Step 1: Write the proportion equation
   279,456.14 : 385,648.37 = 156,931.52 : x
2. Step 2: Convert to fraction form
   279,456.14/385,648.37 = 156,931.52/x
3. Step 3: Cross multiply
   279,456.14x = 385,648.37 × 156,931.52
4. Step 4: Simplify right side
   279,456.14x = 60,520,382,176.72
5. Step 5: Solve for x
   x = 60,520,382,176.72/279,456.14
6. Step 6: Final answer
   x = 216,564.87