Finding the Fourth Proportional to 47,279.57, 65,272.46 and 31,385.75

Step by Step Solution

1. Step 1: Write the proportion equation
   47,279.57 : 65,272.46 = 31,385.75 : x
2. Step 2: Convert to fraction form
   47,279.57/65,272.46 = 31,385.75/x
3. Step 3: Cross multiply
   47,279.57x = 65,272.46 × 31,385.75
4. Step 4: Simplify right side
   47,279.57x = 2,048,624,628.15
5. Step 5: Solve for x
   x = 2,048,624,628.15/47,279.57
6. Step 6: Final answer
   x = 43,330.02