Finding the Fourth Proportional to 70,435.16, 105,655.98 and 28,853

Step by Step Solution

1. Step 1: Write the proportion equation
   70,435.16 : 105,655.98 = 28,853 : x
2. Step 2: Convert to fraction form
   70,435.16/105,655.98 = 28,853/x
3. Step 3: Cross multiply
   70,435.16x = 105,655.98 × 28,853
4. Step 4: Simplify right side
   70,435.16x = 3,048,491,990.94
5. Step 5: Solve for x
   x = 3,048,491,990.94/70,435.16
6. Step 6: Final answer
   x = 43,280.83