Finding the Fourth Proportional to 57,561, 86,337.54 and 35,377.80

Step by Step Solution

1. Step 1: Write the proportion equation
   57,561 : 86,337.54 = 35,377.80 : x
2. Step 2: Convert to fraction form
   57,561/86,337.54 = 35,377.80/x
3. Step 3: Cross multiply
   57,561x = 86,337.54 × 35,377.80
4. Step 4: Simplify right side
   57,561x = 3,054,432,222.61
5. Step 5: Solve for x
   x = 3,054,432,222.61/57,561
6. Step 6: Final answer
   x = 53,064.27