Finding the Fourth Proportional to 123,843.90, 185,839.56 and 85,922.94

Step by Step Solution

1. Step 1: Write the proportion equation
   123,843.90 : 185,839.56 = 85,922.94 : x
2. Step 2: Convert to fraction form
   123,843.90/185,839.56 = 85,922.94/x
3. Step 3: Cross multiply
   123,843.90x = 185,839.56 × 85,922.94
4. Step 4: Simplify right side
   123,843.90x = 15,967,881,363.51
5. Step 5: Solve for x
   x = 15,967,881,363.51/123,843.90
6. Step 6: Final answer
   x = 128,935.55