Finding the Fourth Proportional to 384,978.51, 577,323.94 and 132,187.23

Step by Step Solution

1. Step 1: Write the proportion equation
   384,978.51 : 577,323.94 = 132,187.23 : x
2. Step 2: Convert to fraction form
   384,978.51/577,323.94 = 132,187.23/x
3. Step 3: Cross multiply
   384,978.51x = 577,323.94 × 132,187.23
4. Step 4: Simplify right side
   384,978.51x = 76,314,852,441.29
5. Step 5: Solve for x
   x = 76,314,852,441.29/384,978.51
6. Step 6: Final answer
   x = 198,231.46