Finding the Fourth Proportional to 76,554.45, 105,608.30 and 49,705.38

Step by Step Solution

1. Step 1: Write the proportion equation
   76,554.45 : 105,608.30 = 49,705.38 : x
2. Step 2: Convert to fraction form
   76,554.45/105,608.30 = 49,705.38/x
3. Step 3: Cross multiply
   76,554.45x = 105,608.30 × 49,705.38
4. Step 4: Simplify right side
   76,554.45x = 5,249,300,434.13
5. Step 5: Solve for x
   x = 5,249,300,434.13/76,554.45
6. Step 6: Final answer
   x = 68,569.50