Finding the Fourth Proportional to 868,900,116.22, 1,199,123,154.18 and 492,563,997.96

Step by Step Solution

1. Step 1: Write the proportion equation
   868,900,116.22 : 1,199,123,154.18 = 492,563,997.96 : x
2. Step 2: Convert to fraction form
   868,900,116.22/1,199,123,154.18 = 492,563,997.96/x
3. Step 3: Cross multiply
   868,900,116.22x = 1,199,123,154.18 × 492,563,997.96
4. Step 4: Simplify right side
   868,900,116.22x = 590,644,894,869,306,240
5. Step 5: Solve for x
   x = 590,644,894,869,306,240/868,900,116.22
6. Step 6: Final answer
   x = 679,761,555.84