Finding the Fourth Proportional to 279,089.38, 385,175.82 and 156,615.49

Step by Step Solution

1. Step 1: Write the proportion equation
   279,089.38 : 385,175.82 = 156,615.49 : x
2. Step 2: Convert to fraction form
   279,089.38/385,175.82 = 156,615.49/x
3. Step 3: Cross multiply
   279,089.38x = 385,175.82 × 156,615.49
4. Step 4: Simplify right side
   279,089.38x = 60,324,499,785.45
5. Step 5: Solve for x
   x = 60,324,499,785.45/279,089.38
6. Step 6: Final answer
   x = 216,147.60