Finding the Fourth Proportional to 31,459.16, 43,413.62 and 17,312.00

Step by Step Solution

1. Step 1: Write the proportion equation
   31,459.16 : 43,413.62 = 17,312.00 : x
2. Step 2: Convert to fraction form
   31,459.16/43,413.62 = 17,312.00/x
3. Step 3: Cross multiply
   31,459.16x = 43,413.62 × 17,312.00
4. Step 4: Simplify right side
   31,459.16x = 751,576,285.81
5. Step 5: Solve for x
   x = 751,576,285.81/31,459.16
6. Step 6: Final answer
   x = 23,890.54