Finding the Fourth Proportional to 85,321.50, 117,729.09 and 49,503.30

Step by Step Solution

1. Step 1: Write the proportion equation
   85,321.50 : 117,729.09 = 49,503.30 : x
2. Step 2: Convert to fraction form
   85,321.50/117,729.09 = 49,503.30/x
3. Step 3: Cross multiply
   85,321.50x = 117,729.09 × 49,503.30
4. Step 4: Simplify right side
   85,321.50x = 5,827,978,461.00
5. Step 5: Solve for x
   x = 5,827,978,461.00/85,321.50
6. Step 6: Final answer
   x = 68,306.09