Finding the Fourth Proportional to 57,187.72, 78,900.15 and 34,518.10

Step by Step Solution

1. Step 1: Write the proportion equation
   57,187.72 : 78,900.15 = 34,518.10 : x
2. Step 2: Convert to fraction form
   57,187.72/78,900.15 = 34,518.10/x
3. Step 3: Cross multiply
   57,187.72x = 78,900.15 × 34,518.10
4. Step 4: Simplify right side
   57,187.72x = 2,723,483,267.72
5. Step 5: Solve for x
   x = 2,723,483,267.72/57,187.72
6. Step 6: Final answer
   x = 47,623.57