Finding the Fourth Proportional to 12,752,414,513,238, 19,128,621,769,854 and 12,752,414,513,238

Step by Step Solution

1. Step 1: Write the proportion equation
   12,752,414,513,238 : 19,128,621,769,854 = 12,752,414,513,238 : x
2. Step 2: Convert to fraction form
   12,752,414,513,238/19,128,621,769,854 = 12,752,414,513,238/x
3. Step 3: Cross multiply
   12,752,414,513,238x = 19,128,621,769,854 × 12,752,414,513,238
4. Step 4: Simplify right side
   12,752,414,513,238x = 243,936,113,876,126,518,892,036,096
5. Step 5: Solve for x
   x = 243,936,113,876,126,518,892,036,096/12,752,414,513,238
6. Step 6: Final answer
   x = 19,128,621,769,854