Finding the Fourth Proportional to 981,356,008.10, 1,470,783,631.35 and 521,514,472.10

Step by Step Solution

1. Step 1: Write the proportion equation
   981,356,008.10 : 1,470,783,631.35 = 521,514,472.10 : x
2. Step 2: Convert to fraction form
   981,356,008.10/1,470,783,631.35 = 521,514,472.10/x
3. Step 3: Cross multiply
   981,356,008.10x = 1,470,783,631.35 × 521,514,472.10
4. Step 4: Simplify right side
   981,356,008.10x = 767,034,949,076,816,256
5. Step 5: Solve for x
   x = 767,034,949,076,816,256/981,356,008.10
6. Step 6: Final answer
   x = 781,607,227.90