Finding the Fourth Proportional to 78,856.92, 108,796.50 and 52,012.80

Step by Step Solution

1. Step 1: Write the proportion equation
   78,856.92 : 108,796.50 = 52,012.80 : x
2. Step 2: Convert to fraction form
   78,856.92/108,796.50 = 52,012.80/x
3. Step 3: Cross multiply
   78,856.92x = 108,796.50 × 52,012.80
4. Step 4: Simplify right side
   78,856.92x = 5,658,810,595.20
5. Step 5: Solve for x
   x = 5,658,810,595.20/78,856.92
6. Step 6: Final answer
   x = 71,760.48