Finding the Fourth Proportional to 276,061.67, 380,969.02 and 155,196.20

Step by Step Solution

1. Step 1: Write the proportion equation
   276,061.67 : 380,969.02 = 155,196.20 : x
2. Step 2: Convert to fraction form
   276,061.67/380,969.02 = 155,196.20/x
3. Step 3: Cross multiply
   276,061.67x = 380,969.02 × 155,196.20
4. Step 4: Simplify right side
   276,061.67x = 59,124,945,368.14
5. Step 5: Solve for x
   x = 59,124,945,368.14/276,061.67
6. Step 6: Final answer
   x = 214,172.96