Finding the Fourth Proportional to 70,290.15, 105,318.59 and 49,469.91

Step by Step Solution

1. Step 1: Write the proportion equation
   70,290.15 : 105,318.59 = 49,469.91 : x
2. Step 2: Convert to fraction form
   70,290.15/105,318.59 = 49,469.91/x
3. Step 3: Cross multiply
   70,290.15x = 105,318.59 × 49,469.91
4. Step 4: Simplify right side
   70,290.15x = 5,210,100,921.28
5. Step 5: Solve for x
   x = 5,210,100,921.28/70,290.15
6. Step 6: Final answer
   x = 74,122.77