Finding the Fourth Proportional to 136,354.78, 187,993.69 and 111,734.07

Step by Step Solution

1. Step 1: Write the proportion equation
   136,354.78 : 187,993.69 = 111,734.07 : x
2. Step 2: Convert to fraction form
   136,354.78/187,993.69 = 111,734.07/x
3. Step 3: Cross multiply
   136,354.78x = 187,993.69 × 111,734.07
4. Step 4: Simplify right side
   136,354.78x = 21,005,300,118.02
5. Step 5: Solve for x
   x = 21,005,300,118.02/136,354.78
6. Step 6: Final answer
   x = 154,048.87