Finding the Fourth Proportional to 72,615.89, 108,942.32 and 42,655.47

Step by Step Solution

1. Step 1: Write the proportion equation
   72,615.89 : 108,942.32 = 42,655.47 : x
2. Step 2: Convert to fraction form
   72,615.89/108,942.32 = 42,655.47/x
3. Step 3: Cross multiply
   72,615.89x = 108,942.32 × 42,655.47
4. Step 4: Simplify right side
   72,615.89x = 4,646,985,400.64
5. Step 5: Solve for x
   x = 4,646,985,400.64/72,615.89
6. Step 6: Final answer
   x = 63,994.05