Finding the Fourth Proportional to 404,522,987.46, 558,144,640.89 and 245,749,936.74

Step by Step Solution

1. Step 1: Write the proportion equation
   404,522,987.46 : 558,144,640.89 = 245,749,936.74 : x
2. Step 2: Convert to fraction form
   404,522,987.46/558,144,640.89 = 245,749,936.74/x
3. Step 3: Cross multiply
   404,522,987.46x = 558,144,640.89 × 245,749,936.74
4. Step 4: Simplify right side
   404,522,987.46x = 137,164,010,190,487,520
5. Step 5: Solve for x
   x = 137,164,010,190,487,520/404,522,987.46
6. Step 6: Final answer
   x = 339,075,934.97