Finding the Fourth Proportional to 72,605.85, 108,915.50 and 28,235.94

Step by Step Solution

1. Step 1: Write the proportion equation
   72,605.85 : 108,915.50 = 28,235.94 : x
2. Step 2: Convert to fraction form
   72,605.85/108,915.50 = 28,235.94/x
3. Step 3: Cross multiply
   72,605.85x = 108,915.50 × 28,235.94
4. Step 4: Simplify right side
   72,605.85x = 3,075,331,523.07
5. Step 5: Solve for x
   x = 3,075,331,523.07/72,605.85
6. Step 6: Final answer
   x = 42,356.53