Finding the Fourth Proportional to 63,928.42, 88,259.02 and 56,835.21

Step by Step Solution

1. Step 1: Write the proportion equation
   63,928.42 : 88,259.02 = 56,835.21 : x
2. Step 2: Convert to fraction form
   63,928.42/88,259.02 = 56,835.21/x
3. Step 3: Cross multiply
   63,928.42x = 88,259.02 × 56,835.21
4. Step 4: Simplify right side
   63,928.42x = 5,016,220,116.52
5. Step 5: Solve for x
   x = 5,016,220,116.52/63,928.42
6. Step 6: Final answer
   x = 78,466.20