Finding the Fourth Proportional to 70,264.79, 105,397.37 and 28,711.79

Step by Step Solution

1. Step 1: Write the proportion equation
   70,264.79 : 105,397.37 = 28,711.79 : x
2. Step 2: Convert to fraction form
   70,264.79/105,397.37 = 28,711.79/x
3. Step 3: Cross multiply
   70,264.79x = 105,397.37 × 28,711.79
4. Step 4: Simplify right side
   70,264.79x = 3,026,147,010.43
5. Step 5: Solve for x
   x = 3,026,147,010.43/70,264.79
6. Step 6: Final answer
   x = 43,067.76