Finding the Fourth Proportional to 190,287, 284,978.52 and 123,520.32

Step by Step Solution

1. Step 1: Write the proportion equation
   190,287 : 284,978.52 = 123,520.32 : x
2. Step 2: Convert to fraction form
   190,287/284,978.52 = 123,520.32/x
3. Step 3: Cross multiply
   190,287x = 284,978.52 × 123,520.32
4. Step 4: Simplify right side
   190,287x = 35,200,637,983.53
5. Step 5: Solve for x
   x = 35,200,637,983.53/190,287
6. Step 6: Final answer
   x = 184,987.09