Finding the Fourth Proportional to 57,623.50, 79,520.43 and 31,127.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,623.50 : 79,520.43 = 31,127.50 : x
2. Step 2: Convert to fraction form
   57,623.50/79,520.43 = 31,127.50/x
3. Step 3: Cross multiply
   57,623.50x = 79,520.43 × 31,127.50
4. Step 4: Simplify right side
   57,623.50x = 2,475,272,184.83
5. Step 5: Solve for x
   x = 2,475,272,184.83/57,623.50
6. Step 6: Final answer
   x = 42,955.95