Finding the Fourth Proportional to 205,042.82, 307,667.96 and 138,342.77

Step by Step Solution

1. Step 1: Write the proportion equation
   205,042.82 : 307,667.96 = 138,342.77 : x
2. Step 2: Convert to fraction form
   205,042.82/307,667.96 = 138,342.77/x
3. Step 3: Cross multiply
   205,042.82x = 307,667.96 × 138,342.77
4. Step 4: Simplify right side
   205,042.82x = 42,563,635,596.60
5. Step 5: Solve for x
   x = 42,563,635,596.60/205,042.82
6. Step 6: Final answer
   x = 207,584.14