Finding the Fourth Proportional to 118,521.40, 163,691.56 and 109,553.33

Step by Step Solution

1. Step 1: Write the proportion equation
   118,521.40 : 163,691.56 = 109,553.33 : x
2. Step 2: Convert to fraction form
   118,521.40/163,691.56 = 109,553.33/x
3. Step 3: Cross multiply
   118,521.40x = 163,691.56 × 109,553.33
4. Step 4: Simplify right side
   118,521.40x = 17,932,955,152.96
5. Step 5: Solve for x
   x = 17,932,955,152.96/118,521.40
6. Step 6: Final answer
   x = 151,305.63