Finding the Fourth Proportional to 57,661.79, 79,573.37 and 31,819.74

Step by Step Solution

1. Step 1: Write the proportion equation
   57,661.79 : 79,573.37 = 31,819.74 : x
2. Step 2: Convert to fraction form
   57,661.79/79,573.37 = 31,819.74/x
3. Step 3: Cross multiply
   57,661.79x = 79,573.37 × 31,819.74
4. Step 4: Simplify right side
   57,661.79x = 2,532,003,486.82
5. Step 5: Solve for x
   x = 2,532,003,486.82/57,661.79
6. Step 6: Final answer
   x = 43,911.29