Finding the Fourth Proportional to 144,642.95, 216,978.69 and 49,860.65

Step by Step Solution

1. Step 1: Write the proportion equation
   144,642.95 : 216,978.69 = 49,860.65 : x
2. Step 2: Convert to fraction form
   144,642.95/216,978.69 = 49,860.65/x
3. Step 3: Cross multiply
   144,642.95x = 216,978.69 × 49,860.65
4. Step 4: Simplify right side
   144,642.95x = 10,818,698,519.55
5. Step 5: Solve for x
   x = 10,818,698,519.55/144,642.95
6. Step 6: Final answer
   x = 74,795.89