Finding the Fourth Proportional to 442,945,404.10, 664,418,106.15 and 197,301,564.10

Step by Step Solution

1. Step 1: Write the proportion equation
   442,945,404.10 : 664,418,106.15 = 197,301,564.10 : x
2. Step 2: Convert to fraction form
   442,945,404.10/664,418,106.15 = 197,301,564.10/x
3. Step 3: Cross multiply
   442,945,404.10x = 664,418,106.15 × 197,301,564.10
4. Step 4: Simplify right side
   442,945,404.10x = 131,090,731,559,754,816
5. Step 5: Solve for x
   x = 131,090,731,559,754,816/442,945,404.10
6. Step 6: Final answer
   x = 295,952,346.15