Finding the Fourth Proportional to 1,216,365,357,362.10, 1,678,585,855,404.70 and 660,170,492,842.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216,365,357,362.10 : 1,678,585,855,404.70 = 660,170,492,842.12 : x
2. Step 2: Convert to fraction form
   1,216,365,357,362.10/1,678,585,855,404.70 = 660,170,492,842.12/x
3. Step 3: Cross multiply
   1,216,365,357,362.10x = 1,678,585,855,404.70 × 660,170,492,842.12
4. Step 4: Simplify right side
   1,216,365,357,362.10x = 1,108,152,851,440,332,399,706,112
5. Step 5: Solve for x
   x = 1,108,152,851,440,332,399,706,112/1,216,365,357,362.10
6. Step 6: Final answer
   x = 911,036,182,289.47