Finding the Fourth Proportional to 525,757,300.12, 789,023,434.98 and 249,409,380.76

Step by Step Solution

1. Step 1: Write the proportion equation
   525,757,300.12 : 789,023,434.98 = 249,409,380.76 : x
2. Step 2: Convert to fraction form
   525,757,300.12/789,023,434.98 = 249,409,380.76/x
3. Step 3: Cross multiply
   525,757,300.12x = 789,023,434.98 × 249,409,380.76
4. Step 4: Simplify right side
   525,757,300.12x = 196,789,846,323,489,920
5. Step 5: Solve for x
   x = 196,789,846,323,489,920/525,757,300.12
6. Step 6: Final answer
   x = 374,297,886.65