Finding the Fourth Proportional to 8,989,919,752,139.20, 12,403,962,933,976 and 5,087,991,252,456.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,989,919,752,139.20 : 12,403,962,933,976 = 5,087,991,252,456.30 : x
2. Step 2: Convert to fraction form
   8,989,919,752,139.20/12,403,962,933,976 = 5,087,991,252,456.30/x
3. Step 3: Cross multiply
   8,989,919,752,139.20x = 12,403,962,933,976 × 5,087,991,252,456.30
4. Step 4: Simplify right side
   8,989,919,752,139.20x = 63,111,254,903,862,071,008,428,032
5. Step 5: Solve for x
   x = 63,111,254,903,862,071,008,428,032/8,989,919,752,139.20
6. Step 6: Final answer
   x = 7,020,224,500,763.14