Finding the Fourth Proportional to 53,411.99, 80,111.01 and 13,972.13

Step by Step Solution

1. Step 1: Write the proportion equation
   53,411.99 : 80,111.01 = 13,972.13 : x
2. Step 2: Convert to fraction form
   53,411.99/80,111.01 = 13,972.13/x
3. Step 3: Cross multiply
   53,411.99x = 80,111.01 × 13,972.13
4. Step 4: Simplify right side
   53,411.99x = 1,119,321,446.15
5. Step 5: Solve for x
   x = 1,119,321,446.15/53,411.99
6. Step 6: Final answer
   x = 20,956.37