Finding the Fourth Proportional to 57,648, 79,554.24 and 31,152

Step by Step Solution

1. Step 1: Write the proportion equation
   57,648 : 79,554.24 = 31,152 : x
2. Step 2: Convert to fraction form
   57,648/79,554.24 = 31,152/x
3. Step 3: Cross multiply
   57,648x = 79,554.24 × 31,152
4. Step 4: Simplify right side
   57,648x = 2,478,273,684.48
5. Step 5: Solve for x
   x = 2,478,273,684.48/57,648
6. Step 6: Final answer
   x = 42,989.76