Finding the Fourth Proportional to 277,618,191.30, 413,945,308.89 and 269,990,850.42

Step by Step Solution

1. Step 1: Write the proportion equation
   277,618,191.30 : 413,945,308.89 = 269,990,850.42 : x
2. Step 2: Convert to fraction form
   277,618,191.30/413,945,308.89 = 269,990,850.42/x
3. Step 3: Cross multiply
   277,618,191.30x = 413,945,308.89 × 269,990,850.42
4. Step 4: Simplify right side
   277,618,191.30x = 111,761,445,974,580,688
5. Step 5: Solve for x
   x = 111,761,445,974,580,688/277,618,191.30
6. Step 6: Final answer
   x = 402,572,487.96