Finding the Fourth Proportional to 326,256,452.51, 450,243,648.88 and 200,880,978.55

Step by Step Solution

1. Step 1: Write the proportion equation
   326,256,452.51 : 450,243,648.88 = 200,880,978.55 : x
2. Step 2: Convert to fraction form
   326,256,452.51/450,243,648.88 = 200,880,978.55/x
3. Step 3: Cross multiply
   326,256,452.51x = 450,243,648.88 × 200,880,978.55
4. Step 4: Simplify right side
   326,256,452.51x = 90,445,384,772,997,616
5. Step 5: Solve for x
   x = 90,445,384,772,997,616/326,256,452.51
6. Step 6: Final answer
   x = 277,221,750.18