Finding the Fourth Proportional to 152,467, 210,404.46 and 85,399

Step by Step Solution

1. Step 1: Write the proportion equation
   152,467 : 210,404.46 = 85,399 : x
2. Step 2: Convert to fraction form
   152,467/210,404.46 = 85,399/x
3. Step 3: Cross multiply
   152,467x = 210,404.46 × 85,399
4. Step 4: Simplify right side
   152,467x = 17,968,330,479.54
5. Step 5: Solve for x
   x = 17,968,330,479.54/152,467
6. Step 6: Final answer
   x = 117,850.62