Finding the Fourth Proportional to 85,196.57, 117,571.28 and 49,407.35

Step by Step Solution

1. Step 1: Write the proportion equation
   85,196.57 : 117,571.28 = 49,407.35 : x
2. Step 2: Convert to fraction form
   85,196.57/117,571.28 = 49,407.35/x
3. Step 3: Cross multiply
   85,196.57x = 117,571.28 × 49,407.35
4. Step 4: Simplify right side
   85,196.57x = 5,808,884,546.01
5. Step 5: Solve for x
   x = 5,808,884,546.01/85,196.57
6. Step 6: Final answer
   x = 68,182.14