Finding the Fourth Proportional to 89,438.96, 123,419.79 and 49,151.86

Step by Step Solution

1. Step 1: Write the proportion equation
   89,438.96 : 123,419.79 = 49,151.86 : x
2. Step 2: Convert to fraction form
   89,438.96/123,419.79 = 49,151.86/x
3. Step 3: Cross multiply
   89,438.96x = 123,419.79 × 49,151.86
4. Step 4: Simplify right side
   89,438.96x = 6,066,311,930.76
5. Step 5: Solve for x
   x = 6,066,311,930.76/89,438.96
6. Step 6: Final answer
   x = 67,826.28