Finding the Fourth Proportional to 21,499,736.10, 30,184,661.10 and 21,499,736.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,499,736.10 : 30,184,661.10 = 21,499,736.10 : x
2. Step 2: Convert to fraction form
   21,499,736.10/30,184,661.10 = 21,499,736.10/x
3. Step 3: Cross multiply
   21,499,736.10x = 30,184,661.10 × 21,499,736.10
4. Step 4: Simplify right side
   21,499,736.10x = 648,962,247,917,935.75
5. Step 5: Solve for x
   x = 648,962,247,917,935.75/21,499,736.10
6. Step 6: Final answer
   x = 30,184,661.10