Finding the Fourth Proportional to 28,320,205,060.10, 42,398,678,252.55 and 28,320,205,060.10

Step by Step Solution

1. Step 1: Write the proportion equation
   28,320,205,060.10 : 42,398,678,252.55 = 28,320,205,060.10 : x
2. Step 2: Convert to fraction form
   28,320,205,060.10/42,398,678,252.55 = 28,320,205,060.10/x
3. Step 3: Cross multiply
   28,320,205,060.10x = 42,398,678,252.55 × 28,320,205,060.10
4. Step 4: Simplify right side
   28,320,205,060.10x = 1,200,739,262,389,418,459,136
5. Step 5: Solve for x
   x = 1,200,739,262,389,418,459,136/28,320,205,060.10
6. Step 6: Final answer
   x = 42,398,678,252.55