Finding the Fourth Proportional to 57,189.05, 78,919.93 and 31,347.35

Step by Step Solution

1. Step 1: Write the proportion equation
   57,189.05 : 78,919.93 = 31,347.35 : x
2. Step 2: Convert to fraction form
   57,189.05/78,919.93 = 31,347.35/x
3. Step 3: Cross multiply
   57,189.05x = 78,919.93 × 31,347.35
4. Step 4: Simplify right side
   57,189.05x = 2,473,930,667.69
5. Step 5: Solve for x
   x = 2,473,930,667.69/57,189.05
6. Step 6: Final answer
   x = 43,258.82