Finding the Fourth Proportional to 53,393.42, 80,084.67 and 13,945.42

Step by Step Solution

1. Step 1: Write the proportion equation
   53,393.42 : 80,084.67 = 13,945.42 : x
2. Step 2: Convert to fraction form
   53,393.42/80,084.67 = 13,945.42/x
3. Step 3: Cross multiply
   53,393.42x = 80,084.67 × 13,945.42
4. Step 4: Simplify right side
   53,393.42x = 1,116,814,358.71
5. Step 5: Solve for x
   x = 1,116,814,358.71/53,393.42
6. Step 6: Final answer
   x = 20,916.70