Finding the Fourth Proportional to 31,237.96, 43,109.42 and 17,090.81

Step by Step Solution

1. Step 1: Write the proportion equation
   31,237.96 : 43,109.42 = 17,090.81 : x
2. Step 2: Convert to fraction form
   31,237.96/43,109.42 = 17,090.81/x
3. Step 3: Cross multiply
   31,237.96x = 43,109.42 × 17,090.81
4. Step 4: Simplify right side
   31,237.96x = 736,774,906.43
5. Step 5: Solve for x
   x = 736,774,906.43/31,237.96
6. Step 6: Final answer
   x = 23,585.88