Finding the Fourth Proportional to 89,440.53, 123,421.95 and 49,153.42

Step by Step Solution

1. Step 1: Write the proportion equation
   89,440.53 : 123,421.95 = 49,153.42 : x
2. Step 2: Convert to fraction form
   89,440.53/123,421.95 = 49,153.42/x
3. Step 3: Cross multiply
   89,440.53x = 123,421.95 × 49,153.42
4. Step 4: Simplify right side
   89,440.53x = 6,066,610,945.57
5. Step 5: Solve for x
   x = 6,066,610,945.57/89,440.53
6. Step 6: Final answer
   x = 67,828.43