Finding the Fourth Proportional to 136,185.40, 204,310.83 and 42,691.15

Step by Step Solution

1. Step 1: Write the proportion equation
   136,185.40 : 204,310.83 = 42,691.15 : x
2. Step 2: Convert to fraction form
   136,185.40/204,310.83 = 42,691.15/x
3. Step 3: Cross multiply
   136,185.40x = 204,310.83 × 42,691.15
4. Step 4: Simplify right side
   136,185.40x = 8,722,264,585.57
5. Step 5: Solve for x
   x = 8,722,264,585.57/136,185.40
6. Step 6: Final answer
   x = 64,046.99