Finding the Fourth Proportional to 1,006,059.42, 1,509,087.51 and 258,105.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,006,059.42 : 1,509,087.51 = 258,105.42 : x
2. Step 2: Convert to fraction form
   1,006,059.42/1,509,087.51 = 258,105.42/x
3. Step 3: Cross multiply
   1,006,059.42x = 1,509,087.51 × 258,105.42
4. Step 4: Simplify right side
   1,006,059.42x = 389,503,665,585.30
5. Step 5: Solve for x
   x = 389,503,665,585.30/1,006,059.42
6. Step 6: Final answer
   x = 387,157.71