Finding the Fourth Proportional to 140,096,638.10, 209,767,043.55 and 140,096,638.10

Step by Step Solution

1. Step 1: Write the proportion equation
   140,096,638.10 : 209,767,043.55 = 140,096,638.10 : x
2. Step 2: Convert to fraction form
   140,096,638.10/209,767,043.55 = 140,096,638.10/x
3. Step 3: Cross multiply
   140,096,638.10x = 209,767,043.55 × 140,096,638.10
4. Step 4: Simplify right side
   140,096,638.10x = 29,387,657,585,531,288
5. Step 5: Solve for x
   x = 29,387,657,585,531,288/140,096,638.10
6. Step 6: Final answer
   x = 209,767,043.55