Finding the Fourth Proportional to 31,035.45, 42,872.16 and 29,883.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,035.45 : 42,872.16 = 29,883.31 : x
2. Step 2: Convert to fraction form
   31,035.45/42,872.16 = 29,883.31/x
3. Step 3: Cross multiply
   31,035.45x = 42,872.16 × 29,883.31
4. Step 4: Simplify right side
   31,035.45x = 1,281,162,052.53
5. Step 5: Solve for x
   x = 1,281,162,052.53/31,035.45
6. Step 6: Final answer
   x = 41,280.60