Finding the Fourth Proportional to 72,907.57, 109,361.34 and 17,503.57

Step by Step Solution

1. Step 1: Write the proportion equation
   72,907.57 : 109,361.34 = 17,503.57 : x
2. Step 2: Convert to fraction form
   72,907.57/109,361.34 = 17,503.57/x
3. Step 3: Cross multiply
   72,907.57x = 109,361.34 × 17,503.57
4. Step 4: Simplify right side
   72,907.57x = 1,914,213,869.98
5. Step 5: Solve for x
   x = 1,914,213,869.98/72,907.57
6. Step 6: Final answer
   x = 26,255.35