Finding the Fourth Proportional to 404,330.10, 606,495.15 and 138,002.10

Step by Step Solution

1. Step 1: Write the proportion equation
   404,330.10 : 606,495.15 = 138,002.10 : x
2. Step 2: Convert to fraction form
   404,330.10/606,495.15 = 138,002.10/x
3. Step 3: Cross multiply
   404,330.10x = 606,495.15 × 138,002.10
4. Step 4: Simplify right side
   404,330.10x = 83,697,604,339.82
5. Step 5: Solve for x
   x = 83,697,604,339.82/404,330.10
6. Step 6: Final answer
   x = 207,003.15