Finding the Fourth Proportional to 31,131.17, 42,960.81 and 17,702.43

Step by Step Solution

1. Step 1: Write the proportion equation
   31,131.17 : 42,960.81 = 17,702.43 : x
2. Step 2: Convert to fraction form
   31,131.17/42,960.81 = 17,702.43/x
3. Step 3: Cross multiply
   31,131.17x = 42,960.81 × 17,702.43
4. Step 4: Simplify right side
   31,131.17x = 760,510,731.77
5. Step 5: Solve for x
   x = 760,510,731.77/31,131.17
6. Step 6: Final answer
   x = 24,429.24