Finding the Fourth Proportional to 424,003,744.69, 636,005,849.40 and 193,811,404.14

Step by Step Solution

1. Step 1: Write the proportion equation
   424,003,744.69 : 636,005,849.40 = 193,811,404.14 : x
2. Step 2: Convert to fraction form
   424,003,744.69/636,005,849.40 = 193,811,404.14/x
3. Step 3: Cross multiply
   424,003,744.69x = 636,005,849.40 × 193,811,404.14
4. Step 4: Simplify right side
   424,003,744.69x = 123,265,186,713,467,360
5. Step 5: Solve for x
   x = 123,265,186,713,467,360/424,003,744.69
6. Step 6: Final answer
   x = 290,717,212.43