Finding the Fourth Proportional to 1,006,061.42, 1,509,090.50 and 258,107.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,006,061.42 : 1,509,090.50 = 258,107.42 : x
2. Step 2: Convert to fraction form
   1,006,061.42/1,509,090.50 = 258,107.42/x
3. Step 3: Cross multiply
   1,006,061.42x = 1,509,090.50 × 258,107.42
4. Step 4: Simplify right side
   1,006,061.42x = 389,507,455,501.51
5. Step 5: Solve for x
   x = 389,507,455,501.51/1,006,061.42
6. Step 6: Final answer
   x = 387,160.71