Finding the Fourth Proportional to 31,302.88, 43,199.06 and 17,155.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,302.88 : 43,199.06 = 17,155.72 : x
2. Step 2: Convert to fraction form
   31,302.88/43,199.06 = 17,155.72/x
3. Step 3: Cross multiply
   31,302.88x = 43,199.06 × 17,155.72
4. Step 4: Simplify right side
   31,302.88x = 741,110,977.62
5. Step 5: Solve for x
   x = 741,110,977.62/31,302.88
6. Step 6: Final answer
   x = 23,675.49