Finding the Fourth Proportional to 85,148.31, 117,504.69 and 49,359.15

Step by Step Solution

1. Step 1: Write the proportion equation
   85,148.31 : 117,504.69 = 49,359.15 : x
2. Step 2: Convert to fraction form
   85,148.31/117,504.69 = 49,359.15/x
3. Step 3: Cross multiply
   85,148.31x = 117,504.69 × 49,359.15
4. Step 4: Simplify right side
   85,148.31x = 5,799,931,619.41
5. Step 5: Solve for x
   x = 5,799,931,619.41/85,148.31
6. Step 6: Final answer
   x = 68,115.64