Finding the Fourth Proportional to 267,139.10, 400,072.56 and 154,582.10

Step by Step Solution

1. Step 1: Write the proportion equation
   267,139.10 : 400,072.56 = 154,582.10 : x
2. Step 2: Convert to fraction form
   267,139.10/400,072.56 = 154,582.10/x
3. Step 3: Cross multiply
   267,139.10x = 400,072.56 × 154,582.10
4. Step 4: Simplify right side
   267,139.10x = 61,844,054,476.81
5. Step 5: Solve for x
   x = 61,844,054,476.81/267,139.10
6. Step 6: Final answer
   x = 231,505.07