Finding the Fourth Proportional to 57,564.50, 86,342.79 and 35,381.30

Step by Step Solution

1. Step 1: Write the proportion equation
   57,564.50 : 86,342.79 = 35,381.30 : x
2. Step 2: Convert to fraction form
   57,564.50/86,342.79 = 35,381.30/x
3. Step 3: Cross multiply
   57,564.50x = 86,342.79 × 35,381.30
4. Step 4: Simplify right side
   57,564.50x = 3,054,920,155.83
5. Step 5: Solve for x
   x = 3,054,920,155.83/57,564.50
6. Step 6: Final answer
   x = 53,069.52