Finding the Fourth Proportional to 823,196.61, 1,234,085.35 and 318,112

Step by Step Solution

1. Step 1: Write the proportion equation
   823,196.61 : 1,234,085.35 = 318,112 : x
2. Step 2: Convert to fraction form
   823,196.61/1,234,085.35 = 318,112/x
3. Step 3: Cross multiply
   823,196.61x = 1,234,085.35 × 318,112
4. Step 4: Simplify right side
   823,196.61x = 392,577,358,859.20
5. Step 5: Solve for x
   x = 392,577,358,859.20/823,196.61
6. Step 6: Final answer
   x = 476,893.80