Finding the Fourth Proportional to 76,150.13, 105,072.59 and 49,288.91

Step by Step Solution

1. Step 1: Write the proportion equation
   76,150.13 : 105,072.59 = 49,288.91 : x
2. Step 2: Convert to fraction form
   76,150.13/105,072.59 = 49,288.91/x
3. Step 3: Cross multiply
   76,150.13x = 105,072.59 × 49,288.91
4. Step 4: Simplify right side
   76,150.13x = 5,178,912,660.17
5. Step 5: Solve for x
   x = 5,178,912,660.17/76,150.13
6. Step 6: Final answer
   x = 68,009.25