Finding the Fourth Proportional to 1,168,108,472.43, 1,611,989,770.58 and 639,472,458.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168,108,472.43 : 1,611,989,770.58 = 639,472,458.51 : x
2. Step 2: Convert to fraction form
   1,168,108,472.43/1,611,989,770.58 = 639,472,458.51/x
3. Step 3: Cross multiply
   1,168,108,472.43x = 1,611,989,770.58 × 639,472,458.51
4. Step 4: Simplify right side
   1,168,108,472.43x = 1,030,823,061,684,996,096
5. Step 5: Solve for x
   x = 1,030,823,061,684,996,096/1,168,108,472.43
6. Step 6: Final answer
   x = 882,472,035.79