Finding the Fourth Proportional to 70,448.52, 105,689.38 and 20,529.84

Step by Step Solution

1. Step 1: Write the proportion equation
   70,448.52 : 105,689.38 = 20,529.84 : x
2. Step 2: Convert to fraction form
   70,448.52/105,689.38 = 20,529.84/x
3. Step 3: Cross multiply
   70,448.52x = 105,689.38 × 20,529.84
4. Step 4: Simplify right side
   70,448.52x = 2,169,786,061.10
5. Step 5: Solve for x
   x = 2,169,786,061.10/70,448.52
6. Step 6: Final answer
   x = 30,799.60