Finding the Fourth Proportional to 31,113.56, 42,937.53 and 19,184.78

Step by Step Solution

1. Step 1: Write the proportion equation
   31,113.56 : 42,937.53 = 19,184.78 : x
2. Step 2: Convert to fraction form
   31,113.56/42,937.53 = 19,184.78/x
3. Step 3: Cross multiply
   31,113.56x = 42,937.53 × 19,184.78
4. Step 4: Simplify right side
   31,113.56x = 823,747,066.79
5. Step 5: Solve for x
   x = 823,747,066.79/31,113.56
6. Step 6: Final answer
   x = 26,475.50