Finding the Fourth Proportional to 47,093.40, 64,974.96 and 39,123

Step by Step Solution

1. Step 1: Write the proportion equation
   47,093.40 : 64,974.96 = 39,123 : x
2. Step 2: Convert to fraction form
   47,093.40/64,974.96 = 39,123/x
3. Step 3: Cross multiply
   47,093.40x = 64,974.96 × 39,123
4. Step 4: Simplify right side
   47,093.40x = 2,542,015,360.08
5. Step 5: Solve for x
   x = 2,542,015,360.08/47,093.40
6. Step 6: Final answer
   x = 53,978.17