Finding the Fourth Proportional to 53,436.30, 80,130.12 and 28,469.94

Step by Step Solution

1. Step 1: Write the proportion equation
   53,436.30 : 80,130.12 = 28,469.94 : x
2. Step 2: Convert to fraction form
   53,436.30/80,130.12 = 28,469.94/x
3. Step 3: Cross multiply
   53,436.30x = 80,130.12 × 28,469.94
4. Step 4: Simplify right side
   53,436.30x = 2,281,299,708.59
5. Step 5: Solve for x
   x = 2,281,299,708.59/53,436.30
6. Step 6: Final answer
   x = 42,691.95