Finding the Fourth Proportional to 78,288.48, 108,036.74 and 47,650.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,288.48 : 108,036.74 = 47,650.50 : x
2. Step 2: Convert to fraction form
   78,288.48/108,036.74 = 47,650.50/x
3. Step 3: Cross multiply
   78,288.48x = 108,036.74 × 47,650.50
4. Step 4: Simplify right side
   78,288.48x = 5,148,004,679.37
5. Step 5: Solve for x
   x = 5,148,004,679.37/78,288.48
6. Step 6: Final answer
   x = 65,756.86