Finding the Fourth Proportional to 57,071.14, 78,760.50 and 31,577.10

Step by Step Solution

1. Step 1: Write the proportion equation
   57,071.14 : 78,760.50 = 31,577.10 : x
2. Step 2: Convert to fraction form
   57,071.14/78,760.50 = 31,577.10/x
3. Step 3: Cross multiply
   57,071.14x = 78,760.50 × 31,577.10
4. Step 4: Simplify right side
   57,071.14x = 2,487,028,184.55
5. Step 5: Solve for x
   x = 2,487,028,184.55/57,071.14
6. Step 6: Final answer
   x = 43,577.69