Finding the Fourth Proportional to 118,499.60, 163,385.16 and 111,630.80

Step by Step Solution

1. Step 1: Write the proportion equation
   118,499.60 : 163,385.16 = 111,630.80 : x
2. Step 2: Convert to fraction form
   118,499.60/163,385.16 = 111,630.80/x
3. Step 3: Cross multiply
   118,499.60x = 163,385.16 × 111,630.80
4. Step 4: Simplify right side
   118,499.60x = 18,238,816,118.93
5. Step 5: Solve for x
   x = 18,238,816,118.93/118,499.60
6. Step 6: Final answer
   x = 153,914.58