Finding the Fourth Proportional to 89,378.72, 123,342.90 and 49,093.28

Step by Step Solution

1. Step 1: Write the proportion equation
   89,378.72 : 123,342.90 = 49,093.28 : x
2. Step 2: Convert to fraction form
   89,378.72/123,342.90 = 49,093.28/x
3. Step 3: Cross multiply
   89,378.72x = 123,342.90 × 49,093.28
4. Step 4: Simplify right side
   89,378.72x = 6,055,307,525.71
5. Step 5: Solve for x
   x = 6,055,307,525.71/89,378.72
6. Step 6: Final answer
   x = 67,748.87