Finding the Fourth Proportional to 403,882,443.02, 604,581,114.34 and 263,520,667.42

Step by Step Solution

1. Step 1: Write the proportion equation
   403,882,443.02 : 604,581,114.34 = 263,520,667.42 : x
2. Step 2: Convert to fraction form
   403,882,443.02/604,581,114.34 = 263,520,667.42/x
3. Step 3: Cross multiply
   403,882,443.02x = 604,581,114.34 × 263,520,667.42
4. Step 4: Simplify right side
   403,882,443.02x = 159,319,618,760,404,128
5. Step 5: Solve for x
   x = 159,319,618,760,404,128/403,882,443.02
6. Step 6: Final answer
   x = 394,470,275.98