Finding the Fourth Proportional to 57,415.72, 79,234.59 and 31,575.34

Step by Step Solution

1. Step 1: Write the proportion equation
   57,415.72 : 79,234.59 = 31,575.34 : x
2. Step 2: Convert to fraction form
   57,415.72/79,234.59 = 31,575.34/x
3. Step 3: Cross multiply
   57,415.72x = 79,234.59 × 31,575.34
4. Step 4: Simplify right side
   57,415.72x = 2,501,859,119.01
5. Step 5: Solve for x
   x = 2,501,859,119.01/57,415.72
6. Step 6: Final answer
   x = 43,574.46