Finding the Fourth Proportional to 8,392,009,970.05, 12,581,809,199.71 and 5,075,087,131.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,392,009,970.05 : 12,581,809,199.71 = 5,075,087,131.42 : x
2. Step 2: Convert to fraction form
   8,392,009,970.05/12,581,809,199.71 = 5,075,087,131.42/x
3. Step 3: Cross multiply
   8,392,009,970.05x = 12,581,809,199.71 × 5,075,087,131.42
4. Step 4: Simplify right side
   8,392,009,970.05x = 63,853,777,959,429,988,352
5. Step 5: Solve for x
   x = 63,853,777,959,429,988,352/8,392,009,970.05
6. Step 6: Final answer
   x = 7,608,877,752.45