Finding the Fourth Proportional to 1,092,492,237.69, 1,638,307,003.59 and 437,321,144.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,092,492,237.69 : 1,638,307,003.59 = 437,321,144.07 : x
2. Step 2: Convert to fraction form
   1,092,492,237.69/1,638,307,003.59 = 437,321,144.07/x
3. Step 3: Cross multiply
   1,092,492,237.69x = 1,638,307,003.59 × 437,321,144.07
4. Step 4: Simplify right side
   1,092,492,237.69x = 716,466,293,147,872,384
5. Step 5: Solve for x
   x = 716,466,293,147,872,384/1,092,492,237.69
6. Step 6: Final answer
   x = 655,809,046.90