Finding the Fourth Proportional to 276,160.21, 381,098.59 and 155,302.34

Step by Step Solution

1. Step 1: Write the proportion equation
   276,160.21 : 381,098.59 = 155,302.34 : x
2. Step 2: Convert to fraction form
   276,160.21/381,098.59 = 155,302.34/x
3. Step 3: Cross multiply
   276,160.21x = 381,098.59 × 155,302.34
4. Step 4: Simplify right side
   276,160.21x = 59,185,500,503.95
5. Step 5: Solve for x
   x = 59,185,500,503.95/276,160.21
6. Step 6: Final answer
   x = 214,315.82