Finding the Fourth Proportional to 85,982.31, 118,642.32 and 49,185.63

Step by Step Solution

1. Step 1: Write the proportion equation
   85,982.31 : 118,642.32 = 49,185.63 : x
2. Step 2: Convert to fraction form
   85,982.31/118,642.32 = 49,185.63/x
3. Step 3: Cross multiply
   85,982.31x = 118,642.32 × 49,185.63
4. Step 4: Simplify right side
   85,982.31x = 5,835,497,253.86
5. Step 5: Solve for x
   x = 5,835,497,253.86/85,982.31
6. Step 6: Final answer
   x = 67,868.58