Finding the Fourth Proportional to 109,200.89, 163,684.68 and 77,941.37

Step by Step Solution

1. Step 1: Write the proportion equation
   109,200.89 : 163,684.68 = 77,941.37 : x
2. Step 2: Convert to fraction form
   109,200.89/163,684.68 = 77,941.37/x
3. Step 3: Cross multiply
   109,200.89x = 163,684.68 × 77,941.37
4. Step 4: Simplify right side
   109,200.89x = 12,757,807,388.79
5. Step 5: Solve for x
   x = 12,757,807,388.79/109,200.89
6. Step 6: Final answer
   x = 116,828.79