Finding the Fourth Proportional to 276,521.39, 381,606.69 and 155,667.07

Step by Step Solution

1. Step 1: Write the proportion equation
   276,521.39 : 381,606.69 = 155,667.07 : x
2. Step 2: Convert to fraction form
   276,521.39/381,606.69 = 155,667.07/x
3. Step 3: Cross multiply
   276,521.39x = 381,606.69 × 155,667.07
4. Step 4: Simplify right side
   276,521.39x = 59,403,594,238.92
5. Step 5: Solve for x
   x = 59,403,594,238.92/276,521.39
6. Step 6: Final answer
   x = 214,824.59