Finding the Fourth Proportional to 48,620.07, 72,942.42 and 13,559.72

Step by Step Solution

1. Step 1: Write the proportion equation
   48,620.07 : 72,942.42 = 13,559.72 : x
2. Step 2: Convert to fraction form
   48,620.07/72,942.42 = 13,559.72/x
3. Step 3: Cross multiply
   48,620.07x = 72,942.42 × 13,559.72
4. Step 4: Simplify right side
   48,620.07x = 989,078,426.61
5. Step 5: Solve for x
   x = 989,078,426.61/48,620.07
6. Step 6: Final answer
   x = 20,343.01