Finding the Fourth Proportional to 1,220,141,132.37, 1,683,978,818.78 and 744,107,672.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,220,141,132.37 : 1,683,978,818.78 = 744,107,672.81 : x
2. Step 2: Convert to fraction form
   1,220,141,132.37/1,683,978,818.78 = 744,107,672.81/x
3. Step 3: Cross multiply
   1,220,141,132.37x = 1,683,978,818.78 × 744,107,672.81
4. Step 4: Simplify right side
   1,220,141,132.37x = 1,253,061,559,905,621,760
5. Step 5: Solve for x
   x = 1,253,061,559,905,621,760/1,220,141,132.37
6. Step 6: Final answer
   x = 1,026,980,835.79