Finding the Fourth Proportional to 67,871.58, 93,775.42 and 53,640.42

Step by Step Solution

1. Step 1: Write the proportion equation
   67,871.58 : 93,775.42 = 53,640.42 : x
2. Step 2: Convert to fraction form
   67,871.58/93,775.42 = 53,640.42/x
3. Step 3: Cross multiply
   67,871.58x = 93,775.42 × 53,640.42
4. Step 4: Simplify right side
   67,871.58x = 5,030,152,914.48
5. Step 5: Solve for x
   x = 5,030,152,914.48/67,871.58
6. Step 6: Final answer
   x = 74,112.80