Finding the Fourth Proportional to 47,553.28, 65,644.72 and 31,430.30

Step by Step Solution

1. Step 1: Write the proportion equation
   47,553.28 : 65,644.72 = 31,430.30 : x
2. Step 2: Convert to fraction form
   47,553.28/65,644.72 = 31,430.30/x
3. Step 3: Cross multiply
   47,553.28x = 65,644.72 × 31,430.30
4. Step 4: Simplify right side
   47,553.28x = 2,063,233,243.02
5. Step 5: Solve for x
   x = 2,063,233,243.02/47,553.28
6. Step 6: Final answer
   x = 43,387.82