Finding the Fourth Proportional to 49,578.84, 68,393.42 and 31,655

Step by Step Solution

1. Step 1: Write the proportion equation
   49,578.84 : 68,393.42 = 31,655 : x
2. Step 2: Convert to fraction form
   49,578.84/68,393.42 = 31,655/x
3. Step 3: Cross multiply
   49,578.84x = 68,393.42 × 31,655
4. Step 4: Simplify right side
   49,578.84x = 2,164,993,710.10
5. Step 5: Solve for x
   x = 2,164,993,710.10/49,578.84
6. Step 6: Final answer
   x = 43,667.70