Finding the Fourth Proportional to 89,640.40, 123,702.72 and 49,353.32

Step by Step Solution

1. Step 1: Write the proportion equation
   89,640.40 : 123,702.72 = 49,353.32 : x
2. Step 2: Convert to fraction form
   89,640.40/123,702.72 = 49,353.32/x
3. Step 3: Cross multiply
   89,640.40x = 123,702.72 × 49,353.32
4. Step 4: Simplify right side
   89,640.40x = 6,105,139,925.03
5. Step 5: Solve for x
   x = 6,105,139,925.03/89,640.40
6. Step 6: Final answer
   x = 68,107.01