Finding the Fourth Proportional to 387,970,665.50, 536,099,863.82 and 276,267,577.37

Step by Step Solution

1. Step 1: Write the proportion equation
   387,970,665.50 : 536,099,863.82 = 276,267,577.37 : x
2. Step 2: Convert to fraction form
   387,970,665.50/536,099,863.82 = 276,267,577.37/x
3. Step 3: Cross multiply
   387,970,665.50x = 536,099,863.82 × 276,267,577.37
4. Step 4: Simplify right side
   387,970,665.50x = 148,107,010,605,938,304
5. Step 5: Solve for x
   x = 148,107,010,605,938,304/387,970,665.50
6. Step 6: Final answer
   x = 381,747,961.32