Finding the Fourth Proportional to 823,070.72, 1,234,517.16 and 262,061.12

Step by Step Solution

1. Step 1: Write the proportion equation
   823,070.72 : 1,234,517.16 = 262,061.12 : x
2. Step 2: Convert to fraction form
   823,070.72/1,234,517.16 = 262,061.12/x
3. Step 3: Cross multiply
   823,070.72x = 1,234,517.16 × 262,061.12
4. Step 4: Simplify right side
   823,070.72x = 323,518,949,608.82
5. Step 5: Solve for x
   x = 323,518,949,608.82/823,070.72
6. Step 6: Final answer
   x = 393,063.37