Finding the Fourth Proportional to 1,196,821,391,687.50, 1,651,615,113,267.20 and 648,113,642,922.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196,821,391,687.50 : 1,651,615,113,267.20 = 648,113,642,922.15 : x
2. Step 2: Convert to fraction form
   1,196,821,391,687.50/1,651,615,113,267.20 = 648,113,642,922.15/x
3. Step 3: Cross multiply
   1,196,821,391,687.50x = 1,651,615,113,267.20 × 648,113,642,922.15
4. Step 4: Simplify right side
   1,196,821,391,687.50x = 1,070,434,287,764,884,370,227,200
5. Step 5: Solve for x
   x = 1,070,434,287,764,884,370,227,200/1,196,821,391,687.50
6. Step 6: Final answer
   x = 894,397,689,746.83