Finding the Fourth Proportional to 85,105.72, 117,436.98 and 49,307.32

Step by Step Solution

1. Step 1: Write the proportion equation
   85,105.72 : 117,436.98 = 49,307.32 : x
2. Step 2: Convert to fraction form
   85,105.72/117,436.98 = 49,307.32/x
3. Step 3: Cross multiply
   85,105.72x = 117,436.98 × 49,307.32
4. Step 4: Simplify right side
   85,105.72x = 5,790,502,752.69
5. Step 5: Solve for x
   x = 5,790,502,752.69/85,105.72
6. Step 6: Final answer
   x = 68,038.94