Finding the Fourth Proportional to 72,947.42, 109,421.16 and 17,543.42

Step by Step Solution

1. Step 1: Write the proportion equation
   72,947.42 : 109,421.16 = 17,543.42 : x
2. Step 2: Convert to fraction form
   72,947.42/109,421.16 = 17,543.42/x
3. Step 3: Cross multiply
   72,947.42x = 109,421.16 × 17,543.42
4. Step 4: Simplify right side
   72,947.42x = 1,919,621,366.77
5. Step 5: Solve for x
   x = 1,919,621,366.77/72,947.42
6. Step 6: Final answer
   x = 26,315.14