Finding the Fourth Proportional to 31,113.33, 42,938.94 and 17,688.79

Step by Step Solution

1. Step 1: Write the proportion equation
   31,113.33 : 42,938.94 = 17,688.79 : x
2. Step 2: Convert to fraction form
   31,113.33/42,938.94 = 17,688.79/x
3. Step 3: Cross multiply
   31,113.33x = 42,938.94 × 17,688.79
4. Step 4: Simplify right side
   31,113.33x = 759,537,892.48
5. Step 5: Solve for x
   x = 759,537,892.48/31,113.33
6. Step 6: Final answer
   x = 24,411.98