Finding the Fourth Proportional to 109,503.09, 164,531.43 and 105,074.42

Step by Step Solution

1. Step 1: Write the proportion equation
   109,503.09 : 164,531.43 = 105,074.42 : x
2. Step 2: Convert to fraction form
   109,503.09/164,531.43 = 105,074.42/x
3. Step 3: Cross multiply
   109,503.09x = 164,531.43 × 105,074.42
4. Step 4: Simplify right side
   109,503.09x = 17,288,043,460.84
5. Step 5: Solve for x
   x = 17,288,043,460.84/109,503.09
6. Step 6: Final answer
   x = 157,877.22