Finding the Fourth Proportional to 57,160.69, 78,881.60 and 31,667.10

Step by Step Solution

1. Step 1: Write the proportion equation
   57,160.69 : 78,881.60 = 31,667.10 : x
2. Step 2: Convert to fraction form
   57,160.69/78,881.60 = 31,667.10/x
3. Step 3: Cross multiply
   57,160.69x = 78,881.60 × 31,667.10
4. Step 4: Simplify right side
   57,160.69x = 2,497,951,564.30
5. Step 5: Solve for x
   x = 2,497,951,564.30/57,160.69
6. Step 6: Final answer
   x = 43,700.52