Finding the Fourth Proportional to 57,696, 79,620.56 and 31,200

Step by Step Solution

1. Step 1: Write the proportion equation
   57,696 : 79,620.56 = 31,200 : x
2. Step 2: Convert to fraction form
   57,696/79,620.56 = 31,200/x
3. Step 3: Cross multiply
   57,696x = 79,620.56 × 31,200
4. Step 4: Simplify right side
   57,696x = 2,484,161,472
5. Step 5: Solve for x
   x = 2,484,161,472/57,696
6. Step 6: Final answer
   x = 43,056.04