Finding the Fourth Proportional to 1,216,365,357,016.10, 1,678,585,854,929.10 and 660,170,492,498.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216,365,357,016.10 : 1,678,585,854,929.10 = 660,170,492,498.07 : x
2. Step 2: Convert to fraction form
   1,216,365,357,016.10/1,678,585,854,929.10 = 660,170,492,498.07/x
3. Step 3: Cross multiply
   1,216,365,357,016.10x = 1,678,585,854,929.10 × 660,170,492,498.07
4. Step 4: Simplify right side
   1,216,365,357,016.10x = 1,108,152,850,548,837,849,235,456
5. Step 5: Solve for x
   x = 1,108,152,850,548,837,849,235,456/1,216,365,357,016.10
6. Step 6: Final answer
   x = 911,036,181,815.70