Finding the Fourth Proportional to 288,029,085.09, 397,481,126.69 and 155,870,046.59

Step by Step Solution

1. Step 1: Write the proportion equation
   288,029,085.09 : 397,481,126.69 = 155,870,046.59 : x
2. Step 2: Convert to fraction form
   288,029,085.09/397,481,126.69 = 155,870,046.59/x
3. Step 3: Cross multiply
   288,029,085.09x = 397,481,126.69 × 155,870,046.59
4. Step 4: Simplify right side
   288,029,085.09x = 61,955,401,733,049,240
5. Step 5: Solve for x
   x = 61,955,401,733,049,240/288,029,085.09
6. Step 6: Final answer
   x = 215,101,199.64