Finding the Fourth Proportional to 191,933.69, 287,667.05 and 135,789.98

Step by Step Solution

1. Step 1: Write the proportion equation
   191,933.69 : 287,667.05 = 135,789.98 : x
2. Step 2: Convert to fraction form
   191,933.69/287,667.05 = 135,789.98/x
3. Step 3: Cross multiply
   191,933.69x = 287,667.05 × 135,789.98
4. Step 4: Simplify right side
   191,933.69x = 39,062,302,966.16
5. Step 5: Solve for x
   x = 39,062,302,966.16/191,933.69
6. Step 6: Final answer
   x = 203,519.78