Finding the Fourth Proportional to 70,384.71, 105,581.99 and 28,264.79

Step by Step Solution

1. Step 1: Write the proportion equation
   70,384.71 : 105,581.99 = 28,264.79 : x
2. Step 2: Convert to fraction form
   70,384.71/105,581.99 = 28,264.79/x
3. Step 3: Cross multiply
   70,384.71x = 105,581.99 × 28,264.79
4. Step 4: Simplify right side
   70,384.71x = 2,984,252,713.82
5. Step 5: Solve for x
   x = 2,984,252,713.82/70,384.71
6. Step 6: Final answer
   x = 42,399.16