Finding the Fourth Proportional to 53,825.42, 80,584.50 and 42,747.86

Step by Step Solution

1. Step 1: Write the proportion equation
   53,825.42 : 80,584.50 = 42,747.86 : x
2. Step 2: Convert to fraction form
   53,825.42/80,584.50 = 42,747.86/x
3. Step 3: Cross multiply
   53,825.42x = 80,584.50 × 42,747.86
4. Step 4: Simplify right side
   53,825.42x = 3,444,814,924.17
5. Step 5: Solve for x
   x = 3,444,814,924.17/53,825.42
6. Step 6: Final answer
   x = 63,999.78