Finding the Fourth Proportional to 118,185.30, 163,089.21 and 67,191

Step by Step Solution

1. Step 1: Write the proportion equation
   118,185.30 : 163,089.21 = 67,191 : x
2. Step 2: Convert to fraction form
   118,185.30/163,089.21 = 67,191/x
3. Step 3: Cross multiply
   118,185.30x = 163,089.21 × 67,191
4. Step 4: Simplify right side
   118,185.30x = 10,958,127,109.11
5. Step 5: Solve for x
   x = 10,958,127,109.11/118,185.30
6. Step 6: Final answer
   x = 92,719.88