Finding the Fourth Proportional to 85,509, 118,009.69 and 49,696.70

Step by Step Solution

1. Step 1: Write the proportion equation
   85,509 : 118,009.69 = 49,696.70 : x
2. Step 2: Convert to fraction form
   85,509/118,009.69 = 49,696.70/x
3. Step 3: Cross multiply
   85,509x = 118,009.69 × 49,696.70
4. Step 4: Simplify right side
   85,509x = 5,864,691,446.73
5. Step 5: Solve for x
   x = 5,864,691,446.73/85,509
6. Step 6: Final answer
   x = 68,585.66