Finding the Fourth Proportional to 878,156.10, 1,317,321.78 and 238,470.24

Step by Step Solution

1. Step 1: Write the proportion equation
   878,156.10 : 1,317,321.78 = 238,470.24 : x
2. Step 2: Convert to fraction form
   878,156.10/1,317,321.78 = 238,470.24/x
3. Step 3: Cross multiply
   878,156.10x = 1,317,321.78 × 238,470.24
4. Step 4: Simplify right side
   878,156.10x = 314,142,041,033.83
5. Step 5: Solve for x
   x = 314,142,041,033.83/878,156.10
6. Step 6: Final answer
   x = 357,729.16