Finding the Fourth Proportional to 1,146,146,111.30, 1,581,672,125.66 and 644,357,131.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146,146,111.30 : 1,581,672,125.66 = 644,357,131.69 : x
2. Step 2: Convert to fraction form
   1,146,146,111.30/1,581,672,125.66 = 644,357,131.69/x
3. Step 3: Cross multiply
   1,146,146,111.30x = 1,581,672,125.66 × 644,357,131.69
4. Step 4: Simplify right side
   1,146,146,111.30x = 1,019,161,714,153,172,608
5. Step 5: Solve for x
   x = 1,019,161,714,153,172,608/1,146,146,111.30
6. Step 6: Final answer
   x = 889,207,496.41