Finding the Fourth Proportional to 143,375.69, 215,065.56 and 54,634.05

Step by Step Solution

1. Step 1: Write the proportion equation
   143,375.69 : 215,065.56 = 54,634.05 : x
2. Step 2: Convert to fraction form
   143,375.69/215,065.56 = 54,634.05/x
3. Step 3: Cross multiply
   143,375.69x = 215,065.56 × 54,634.05
4. Step 4: Simplify right side
   143,375.69x = 11,749,902,558.32
5. Step 5: Solve for x
   x = 11,749,902,558.32/143,375.69
6. Step 6: Final answer
   x = 81,951.85