Finding the Fourth Proportional to 128,066.15, 192,108.50 and 49,180.37

Step by Step Solution

1. Step 1: Write the proportion equation
   128,066.15 : 192,108.50 = 49,180.37 : x
2. Step 2: Convert to fraction form
   128,066.15/192,108.50 = 49,180.37/x
3. Step 3: Cross multiply
   128,066.15x = 192,108.50 × 49,180.37
4. Step 4: Simplify right side
   128,066.15x = 9,447,967,110.15
5. Step 5: Solve for x
   x = 9,447,967,110.15/128,066.15
6. Step 6: Final answer
   x = 73,774.12