Finding the Fourth Proportional to 85,090.49, 117,435.89 and 48,806.09

Step by Step Solution

1. Step 1: Write the proportion equation
   85,090.49 : 117,435.89 = 48,806.09 : x
2. Step 2: Convert to fraction form
   85,090.49/117,435.89 = 48,806.09/x
3. Step 3: Cross multiply
   85,090.49x = 117,435.89 × 48,806.09
4. Step 4: Simplify right side
   85,090.49x = 5,731,586,616.57
5. Step 5: Solve for x
   x = 5,731,586,616.57/85,090.49
6. Step 6: Final answer
   x = 67,358.72