Finding the Fourth Proportional to 69,986.96, 104,863.56 and 49,173.20

Step by Step Solution

1. Step 1: Write the proportion equation
   69,986.96 : 104,863.56 = 49,173.20 : x
2. Step 2: Convert to fraction form
   69,986.96/104,863.56 = 49,173.20/x
3. Step 3: Cross multiply
   69,986.96x = 104,863.56 × 49,173.20
4. Step 4: Simplify right side
   69,986.96x = 5,156,476,808.59
5. Step 5: Solve for x
   x = 5,156,476,808.59/69,986.96
6. Step 6: Final answer
   x = 73,677.68