Finding the Fourth Proportional to 191,661.72, 287,174.76 and 116,554.68

Step by Step Solution

1. Step 1: Write the proportion equation
   191,661.72 : 287,174.76 = 116,554.68 : x
2. Step 2: Convert to fraction form
   191,661.72/287,174.76 = 116,554.68/x
3. Step 3: Cross multiply
   191,661.72x = 287,174.76 × 116,554.68
4. Step 4: Simplify right side
   191,661.72x = 33,471,562,255.88
5. Step 5: Solve for x
   x = 33,471,562,255.88/191,661.72
6. Step 6: Final answer
   x = 174,638.75