Finding the Fourth Proportional to 47,938.21, 72,166.24 and 43,115.89

Step by Step Solution

1. Step 1: Write the proportion equation
   47,938.21 : 72,166.24 = 43,115.89 : x
2. Step 2: Convert to fraction form
   47,938.21/72,166.24 = 43,115.89/x
3. Step 3: Cross multiply
   47,938.21x = 72,166.24 × 43,115.89
4. Step 4: Simplify right side
   47,938.21x = 3,111,511,665.55
5. Step 5: Solve for x
   x = 3,111,511,665.55/47,938.21
6. Step 6: Final answer
   x = 64,906.71