Finding the Fourth Proportional to 404,592,046.02, 558,338,782.56 and 218,953,078.10

Step by Step Solution

1. Step 1: Write the proportion equation
   404,592,046.02 : 558,338,782.56 = 218,953,078.10 : x
2. Step 2: Convert to fraction form
   404,592,046.02/558,338,782.56 = 218,953,078.10/x
3. Step 3: Cross multiply
   404,592,046.02x = 558,338,782.56 × 218,953,078.10
4. Step 4: Simplify right side
   404,592,046.02x = 122,249,995,064,118,576
5. Step 5: Solve for x
   x = 122,249,995,064,118,576/404,592,046.02
6. Step 6: Final answer
   x = 302,156,199.72