Finding the Fourth Proportional to 89,770.96, 123,883.89 and 49,485.40

Step by Step Solution

1. Step 1: Write the proportion equation
   89,770.96 : 123,883.89 = 49,485.40 : x
2. Step 2: Convert to fraction form
   89,770.96/123,883.89 = 49,485.40/x
3. Step 3: Cross multiply
   89,770.96x = 123,883.89 × 49,485.40
4. Step 4: Simplify right side
   89,770.96x = 6,130,443,354.93
5. Step 5: Solve for x
   x = 6,130,443,354.93/89,770.96
6. Step 6: Final answer
   x = 68,289.83