Finding the Fourth Proportional to 70,595.52, 105,869.79 and 28,464.72

Step by Step Solution

1. Step 1: Write the proportion equation
   70,595.52 : 105,869.79 = 28,464.72 : x
2. Step 2: Convert to fraction form
   70,595.52/105,869.79 = 28,464.72/x
3. Step 3: Cross multiply
   70,595.52x = 105,869.79 × 28,464.72
4. Step 4: Simplify right side
   70,595.52x = 3,013,553,928.81
5. Step 5: Solve for x
   x = 3,013,553,928.81/70,595.52
6. Step 6: Final answer
   x = 42,687.61