Finding the Fourth Proportional to 103,722.69, 142,857.77 and 89,550.93

Step by Step Solution

1. Step 1: Write the proportion equation
   103,722.69 : 142,857.77 = 89,550.93 : x
2. Step 2: Convert to fraction form
   103,722.69/142,857.77 = 89,550.93/x
3. Step 3: Cross multiply
   103,722.69x = 142,857.77 × 89,550.93
4. Step 4: Simplify right side
   103,722.69x = 12,793,045,713.47
5. Step 5: Solve for x
   x = 12,793,045,713.47/103,722.69
6. Step 6: Final answer
   x = 123,338.93