Finding the Fourth Proportional to 123,776.38, 185,344.82 and 85,426.22

Step by Step Solution

1. Step 1: Write the proportion equation
   123,776.38 : 185,344.82 = 85,426.22 : x
2. Step 2: Convert to fraction form
   123,776.38/185,344.82 = 85,426.22/x
3. Step 3: Cross multiply
   123,776.38x = 185,344.82 × 85,426.22
4. Step 4: Simplify right side
   123,776.38x = 15,833,307,319.51
5. Step 5: Solve for x
   x = 15,833,307,319.51/123,776.38
6. Step 6: Final answer
   x = 127,918.64