Finding the Fourth Proportional to 72,989.67, 100,725.83 and 42,768.98

Step by Step Solution

1. Step 1: Write the proportion equation
   72,989.67 : 100,725.83 = 42,768.98 : x
2. Step 2: Convert to fraction form
   72,989.67/100,725.83 = 42,768.98/x
3. Step 3: Cross multiply
   72,989.67x = 100,725.83 × 42,768.98
4. Step 4: Simplify right side
   72,989.67x = 4,307,940,829.38
5. Step 5: Solve for x
   x = 4,307,940,829.38/72,989.67
6. Step 6: Final answer
   x = 59,021.24