Finding the Fourth Proportional to 243,072.89, 335,440.59 and 134,177.25

Step by Step Solution

1. Step 1: Write the proportion equation
   243,072.89 : 335,440.59 = 134,177.25 : x
2. Step 2: Convert to fraction form
   243,072.89/335,440.59 = 134,177.25/x
3. Step 3: Cross multiply
   243,072.89x = 335,440.59 × 134,177.25
4. Step 4: Simplify right side
   243,072.89x = 45,008,495,904.58
5. Step 5: Solve for x
   x = 45,008,495,904.58/243,072.89
6. Step 6: Final answer
   x = 185,164.61