Finding the Fourth Proportional to 70,178.73, 105,274.71 and 19,581.12

Step by Step Solution

1. Step 1: Write the proportion equation
   70,178.73 : 105,274.71 = 19,581.12 : x
2. Step 2: Convert to fraction form
   70,178.73/105,274.71 = 19,581.12/x
3. Step 3: Cross multiply
   70,178.73x = 105,274.71 × 19,581.12
4. Step 4: Simplify right side
   70,178.73x = 2,061,396,729.48
5. Step 5: Solve for x
   x = 2,061,396,729.48/70,178.73
6. Step 6: Final answer
   x = 29,373.53