Finding the Fourth Proportional to 78,948.61, 109,021.82 and 50,703.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,948.61 : 109,021.82 = 50,703.50 : x
2. Step 2: Convert to fraction form
   78,948.61/109,021.82 = 50,703.50/x
3. Step 3: Cross multiply
   78,948.61x = 109,021.82 × 50,703.50
4. Step 4: Simplify right side
   78,948.61x = 5,527,787,850.37
5. Step 5: Solve for x
   x = 5,527,787,850.37/78,948.61
6. Step 6: Final answer
   x = 70,017.54