Finding the Fourth Proportional to 31,196.96, 46,827.84 and 20,880.80

Step by Step Solution

1. Step 1: Write the proportion equation
   31,196.96 : 46,827.84 = 20,880.80 : x
2. Step 2: Convert to fraction form
   31,196.96/46,827.84 = 20,880.80/x
3. Step 3: Cross multiply
   31,196.96x = 46,827.84 × 20,880.80
4. Step 4: Simplify right side
   31,196.96x = 977,802,761.47
5. Step 5: Solve for x
   x = 977,802,761.47/31,196.96
6. Step 6: Final answer
   x = 31,342.89