Finding the Fourth Proportional to 12,778,828,404.10, 19,168,242,606.15 and 12,778,828,404.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,778,828,404.10 : 19,168,242,606.15 = 12,778,828,404.10 : x
2. Step 2: Convert to fraction form
   12,778,828,404.10/19,168,242,606.15 = 12,778,828,404.10/x
3. Step 3: Cross multiply
   12,778,828,404.10x = 19,168,242,606.15 × 12,778,828,404.10
4. Step 4: Simplify right side
   12,778,828,404.10x = 244,947,683,072,149,454,848
5. Step 5: Solve for x
   x = 244,947,683,072,149,454,848/12,778,828,404.10
6. Step 6: Final answer
   x = 19,168,242,606.15