Finding the Fourth Proportional to 1,977,076,612.23, 2,728,185,404.73 and 1,173,165,590.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,977,076,612.23 : 2,728,185,404.73 = 1,173,165,590.10 : x
2. Step 2: Convert to fraction form
   1,977,076,612.23/2,728,185,404.73 = 1,173,165,590.10/x
3. Step 3: Cross multiply
   1,977,076,612.23x = 2,728,185,404.73 × 1,173,165,590.10
4. Step 4: Simplify right side
   1,977,076,612.23x = 3,200,613,240,242,277,376
5. Step 5: Solve for x
   x = 3,200,613,240,242,277,376/1,977,076,612.23
6. Step 6: Final answer
   x = 1,618,861,515.25