Finding the Fourth Proportional to 900,997,868, 1,243,377,057.84 and 488,932,076

Step by Step Solution

1. Step 1: Write the proportion equation
   900,997,868 : 1,243,377,057.84 = 488,932,076 : x
2. Step 2: Convert to fraction form
   900,997,868/1,243,377,057.84 = 488,932,076/x
3. Step 3: Cross multiply
   900,997,868x = 1,243,377,057.84 × 488,932,076
4. Step 4: Simplify right side
   900,997,868x = 607,926,926,140,483,200
5. Step 5: Solve for x
   x = 607,926,926,140,483,200/900,997,868
6. Step 6: Final answer
   x = 674,726,264.88