Finding the Fourth Proportional to 123,841.63, 170,953.77 and 83,609.89

Step by Step Solution

1. Step 1: Write the proportion equation
   123,841.63 : 170,953.77 = 83,609.89 : x
2. Step 2: Convert to fraction form
   123,841.63/170,953.77 = 83,609.89/x
3. Step 3: Cross multiply
   123,841.63x = 170,953.77 × 83,609.89
4. Step 4: Simplify right side
   123,841.63x = 14,293,425,904.79
5. Step 5: Solve for x
   x = 14,293,425,904.79/123,841.63
6. Step 6: Final answer
   x = 115,416.97