Finding the Fourth Proportional to 57,187.98, 78,900.50 and 34,518.35

Step by Step Solution

1. Step 1: Write the proportion equation
   57,187.98 : 78,900.50 = 34,518.35 : x
2. Step 2: Convert to fraction form
   57,187.98/78,900.50 = 34,518.35/x
3. Step 3: Cross multiply
   57,187.98x = 78,900.50 × 34,518.35
4. Step 4: Simplify right side
   57,187.98x = 2,723,515,357.72
5. Step 5: Solve for x
   x = 2,723,515,357.72/57,187.98
6. Step 6: Final answer
   x = 47,623.91