Finding the Fourth Proportional to 47,065.35, 64,917.41 and 39,942.72

Step by Step Solution

1. Step 1: Write the proportion equation
   47,065.35 : 64,917.41 = 39,942.72 : x
2. Step 2: Convert to fraction form
   47,065.35/64,917.41 = 39,942.72/x
3. Step 3: Cross multiply
   47,065.35x = 64,917.41 × 39,942.72
4. Step 4: Simplify right side
   47,065.35x = 2,592,977,731.04
5. Step 5: Solve for x
   x = 2,592,977,731.04/47,065.35
6. Step 6: Final answer
   x = 55,093.14