Finding the Fourth Proportional to 73,696.38, 110,544.12 and 21,105.87

Step by Step Solution

1. Step 1: Write the proportion equation
   73,696.38 : 110,544.12 = 21,105.87 : x
2. Step 2: Convert to fraction form
   73,696.38/110,544.12 = 21,105.87/x
3. Step 3: Cross multiply
   73,696.38x = 110,544.12 × 21,105.87
4. Step 4: Simplify right side
   73,696.38x = 2,333,129,825.98
5. Step 5: Solve for x
   x = 2,333,129,825.98/73,696.38
6. Step 6: Final answer
   x = 31,658.68