Finding the Fourth Proportional to 105,021.86, 144,942.64 and 59,706.68

Step by Step Solution

1. Step 1: Write the proportion equation
   105,021.86 : 144,942.64 = 59,706.68 : x
2. Step 2: Convert to fraction form
   105,021.86/144,942.64 = 59,706.68/x
3. Step 3: Cross multiply
   105,021.86x = 144,942.64 × 59,706.68
4. Step 4: Simplify right side
   105,021.86x = 8,654,042,950.86
5. Step 5: Solve for x
   x = 8,654,042,950.86/105,021.86
6. Step 6: Final answer
   x = 82,402.31