Finding the Fourth Proportional to 5,157,757,941.89, 7,117,730,063.61 and 2,930,212,361.57

Step by Step Solution

1. Step 1: Write the proportion equation
   5,157,757,941.89 : 7,117,730,063.61 = 2,930,212,361.57 : x
2. Step 2: Convert to fraction form
   5,157,757,941.89/7,117,730,063.61 = 2,930,212,361.57/x
3. Step 3: Cross multiply
   5,157,757,941.89x = 7,117,730,063.61 × 2,930,212,361.57
4. Step 4: Simplify right side
   5,157,757,941.89x = 20,856,460,618,708,443,136
5. Step 5: Solve for x
   x = 20,856,460,618,708,443,136/5,157,757,941.89
6. Step 6: Final answer
   x = 4,043,706,752.76