Finding the Fourth Proportional to 63,311.32, 87,311.82 and 54,355.96

Step by Step Solution

1. Step 1: Write the proportion equation
   63,311.32 : 87,311.82 = 54,355.96 : x
2. Step 2: Convert to fraction form
   63,311.32/87,311.82 = 54,355.96/x
3. Step 3: Cross multiply
   63,311.32x = 87,311.82 × 54,355.96
4. Step 4: Simplify right side
   63,311.32x = 4,745,917,795.45
5. Step 5: Solve for x
   x = 4,745,917,795.45/63,311.32
6. Step 6: Final answer
   x = 74,961.60