Finding the Fourth Proportional to 31,216.38, 43,078.50 and 17,069.22

Step by Step Solution

1. Step 1: Write the proportion equation
   31,216.38 : 43,078.50 = 17,069.22 : x
2. Step 2: Convert to fraction form
   31,216.38/43,078.50 = 17,069.22/x
3. Step 3: Cross multiply
   31,216.38x = 43,078.50 × 17,069.22
4. Step 4: Simplify right side
   31,216.38x = 735,316,393.77
5. Step 5: Solve for x
   x = 735,316,393.77/31,216.38
6. Step 6: Final answer
   x = 23,555.47