Finding the Fourth Proportional to 12,752,414,496,620, 19,128,621,744,928 and 12,752,414,496,620

Step by Step Solution

1. Step 1: Write the proportion equation
   12,752,414,496,620 : 19,128,621,744,928 = 12,752,414,496,620 : x
2. Step 2: Convert to fraction form
   12,752,414,496,620/19,128,621,744,928 = 12,752,414,496,620/x
3. Step 3: Cross multiply
   12,752,414,496,620x = 19,128,621,744,928 × 12,752,414,496,620
4. Step 4: Simplify right side
   12,752,414,496,620x = 243,936,113,240,380,374,496,837,632
5. Step 5: Solve for x
   x = 243,936,113,240,380,374,496,837,632/12,752,414,496,620
6. Step 6: Final answer
   x = 19,128,621,744,928