Finding the Fourth Proportional to 57,003.06, 78,662.69 and 31,160.58

Step by Step Solution

1. Step 1: Write the proportion equation
   57,003.06 : 78,662.69 = 31,160.58 : x
2. Step 2: Convert to fraction form
   57,003.06/78,662.69 = 31,160.58/x
3. Step 3: Cross multiply
   57,003.06x = 78,662.69 × 31,160.58
4. Step 4: Simplify right side
   57,003.06x = 2,451,174,888.96
5. Step 5: Solve for x
   x = 2,451,174,888.96/57,003.06
6. Step 6: Final answer
   x = 43,000.76