Finding the Fourth Proportional to 72,897.88, 108,947.40 and 53,217.88

Step by Step Solution

1. Step 1: Write the proportion equation
   72,897.88 : 108,947.40 = 53,217.88 : x
2. Step 2: Convert to fraction form
   72,897.88/108,947.40 = 53,217.88/x
3. Step 3: Cross multiply
   72,897.88x = 108,947.40 × 53,217.88
4. Step 4: Simplify right side
   72,897.88x = 5,797,949,659.51
5. Step 5: Solve for x
   x = 5,797,949,659.51/72,897.88
6. Step 6: Final answer
   x = 79,535.23