Finding the Fourth Proportional to 2,105,798,765,812.80, 3,156,493,559,272.20 and 881,259,479,701.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,798,765,812.80 : 3,156,493,559,272.20 = 881,259,479,701.50 : x
2. Step 2: Convert to fraction form
   2,105,798,765,812.80/3,156,493,559,272.20 = 881,259,479,701.50/x
3. Step 3: Cross multiply
   2,105,798,765,812.80x = 3,156,493,559,272.20 × 881,259,479,701.50
4. Step 4: Simplify right side
   2,105,798,765,812.80x = 2,781,689,871,725,355,222,433,792
5. Step 5: Solve for x
   x = 2,781,689,871,725,355,222,433,792/2,105,798,765,812.80
6. Step 6: Final answer
   x = 1,320,966,616,984.26