Finding the Fourth Proportional to 112,963.98, 155,878.71 and 67,640.85

Step by Step Solution

1. Step 1: Write the proportion equation
   112,963.98 : 155,878.71 = 67,640.85 : x
2. Step 2: Convert to fraction form
   112,963.98/155,878.71 = 67,640.85/x
3. Step 3: Cross multiply
   112,963.98x = 155,878.71 × 67,640.85
4. Step 4: Simplify right side
   112,963.98x = 10,543,768,441.30
5. Step 5: Solve for x
   x = 10,543,768,441.30/112,963.98
6. Step 6: Final answer
   x = 93,337.44