Finding the Fourth Proportional to 870,061,027.94, 1,305,078,763.46 and 215,012,036.56

Step by Step Solution

1. Step 1: Write the proportion equation
   870,061,027.94 : 1,305,078,763.46 = 215,012,036.56 : x
2. Step 2: Convert to fraction form
   870,061,027.94/1,305,078,763.46 = 215,012,036.56/x
3. Step 3: Cross multiply
   870,061,027.94x = 1,305,078,763.46 × 215,012,036.56
4. Step 4: Simplify right side
   870,061,027.94x = 280,607,642,802,741,120
5. Step 5: Solve for x
   x = 280,607,642,802,741,120/870,061,027.94
6. Step 6: Final answer
   x = 322,514,896.99