Finding the Fourth Proportional to 31,156.35, 42,995.46 and 19,214.91

Step by Step Solution

1. Step 1: Write the proportion equation
   31,156.35 : 42,995.46 = 19,214.91 : x
2. Step 2: Convert to fraction form
   31,156.35/42,995.46 = 19,214.91/x
3. Step 3: Cross multiply
   31,156.35x = 42,995.46 × 19,214.91
4. Step 4: Simplify right side
   31,156.35x = 826,153,894.31
5. Step 5: Solve for x
   x = 826,153,894.31/31,156.35
6. Step 6: Final answer
   x = 26,516.39