Finding the Fourth Proportional to 89,679.96, 123,758.28 and 49,392.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89,679.96 : 123,758.28 = 49,392.72 : x
2. Step 2: Convert to fraction form
   89,679.96/123,758.28 = 49,392.72/x
3. Step 3: Cross multiply
   89,679.96x = 123,758.28 × 49,392.72
4. Step 4: Simplify right side
   89,679.96x = 6,112,758,071.72
5. Step 5: Solve for x
   x = 6,112,758,071.72/89,679.96
6. Step 6: Final answer
   x = 68,161.92