Finding the Fourth Proportional to 49,688.31, 68,554.53 and 30,311.32

Step by Step Solution

1. Step 1: Write the proportion equation
   49,688.31 : 68,554.53 = 30,311.32 : x
2. Step 2: Convert to fraction form
   49,688.31/68,554.53 = 30,311.32/x
3. Step 3: Cross multiply
   49,688.31x = 68,554.53 × 30,311.32
4. Step 4: Simplify right side
   49,688.31x = 2,077,978,296.28
5. Step 5: Solve for x
   x = 2,077,978,296.28/49,688.31
6. Step 6: Final answer
   x = 41,820.27