Finding the Fourth Proportional to 450,978.43, 676,564.59 and 131,135.86

Step by Step Solution

1. Step 1: Write the proportion equation
   450,978.43 : 676,564.59 = 131,135.86 : x
2. Step 2: Convert to fraction form
   450,978.43/676,564.59 = 131,135.86/x
3. Step 3: Cross multiply
   450,978.43x = 676,564.59 × 131,135.86
4. Step 4: Simplify right side
   450,978.43x = 88,721,875,972.37
5. Step 5: Solve for x
   x = 88,721,875,972.37/450,978.43
6. Step 6: Final answer
   x = 196,731.97