Finding the Fourth Proportional to 49,830.24, 68,723.43 and 42,106.89

Step by Step Solution

1. Step 1: Write the proportion equation
   49,830.24 : 68,723.43 = 42,106.89 : x
2. Step 2: Convert to fraction form
   49,830.24/68,723.43 = 42,106.89/x
3. Step 3: Cross multiply
   49,830.24x = 68,723.43 × 42,106.89
4. Step 4: Simplify right side
   49,830.24x = 2,893,729,907.43
5. Step 5: Solve for x
   x = 2,893,729,907.43/49,830.24
6. Step 6: Final answer
   x = 58,071.76