Finding the Fourth Proportional to 279,091.42, 385,134.42 and 158,240.83

Step by Step Solution

1. Step 1: Write the proportion equation
   279,091.42 : 385,134.42 = 158,240.83 : x
2. Step 2: Convert to fraction form
   279,091.42/385,134.42 = 158,240.83/x
3. Step 3: Cross multiply
   279,091.42x = 385,134.42 × 158,240.83
4. Step 4: Simplify right side
   279,091.42x = 60,943,990,282.37
5. Step 5: Solve for x
   x = 60,943,990,282.37/279,091.42
6. Step 6: Final answer
   x = 218,365.69