Finding the Fourth Proportional to 71,897.31, 99,165.42 and 47,654.37

Step by Step Solution

1. Step 1: Write the proportion equation
   71,897.31 : 99,165.42 = 47,654.37 : x
2. Step 2: Convert to fraction form
   71,897.31/99,165.42 = 47,654.37/x
3. Step 3: Cross multiply
   71,897.31x = 99,165.42 × 47,654.37
4. Step 4: Simplify right side
   71,897.31x = 4,725,665,615.89
5. Step 5: Solve for x
   x = 4,725,665,615.89/71,897.31
6. Step 6: Final answer
   x = 65,727.99