Finding the Fourth Proportional to 70,323.02, 105,492.73 and 28,217.80

Step by Step Solution

1. Step 1: Write the proportion equation
   70,323.02 : 105,492.73 = 28,217.80 : x
2. Step 2: Convert to fraction form
   70,323.02/105,492.73 = 28,217.80/x
3. Step 3: Cross multiply
   70,323.02x = 105,492.73 × 28,217.80
4. Step 4: Simplify right side
   70,323.02x = 2,976,772,756.59
5. Step 5: Solve for x
   x = 2,976,772,756.59/70,323.02
6. Step 6: Final answer
   x = 42,329.99