Finding the Fourth Proportional to 65,664.72, 90,603.88 and 38,793.76

Step by Step Solution

1. Step 1: Write the proportion equation
   65,664.72 : 90,603.88 = 38,793.76 : x
2. Step 2: Convert to fraction form
   65,664.72/90,603.88 = 38,793.76/x
3. Step 3: Cross multiply
   65,664.72x = 90,603.88 × 38,793.76
4. Step 4: Simplify right side
   65,664.72x = 3,514,865,175.79
5. Step 5: Solve for x
   x = 3,514,865,175.79/65,664.72
6. Step 6: Final answer
   x = 53,527.45