Finding the Fourth Proportional to 85,144.62, 117,499.59 and 49,355.40

Step by Step Solution

1. Step 1: Write the proportion equation
   85,144.62 : 117,499.59 = 49,355.40 : x
2. Step 2: Convert to fraction form
   85,144.62/117,499.59 = 49,355.40/x
3. Step 3: Cross multiply
   85,144.62x = 117,499.59 × 49,355.40
4. Step 4: Simplify right side
   85,144.62x = 5,799,239,264.29
5. Step 5: Solve for x
   x = 5,799,239,264.29/85,144.62
6. Step 6: Final answer
   x = 68,110.46