Finding the Fourth Proportional to 109,499.40, 163,941.90 and 106,427.40

Step by Step Solution

1. Step 1: Write the proportion equation
   109,499.40 : 163,941.90 = 106,427.40 : x
2. Step 2: Convert to fraction form
   109,499.40/163,941.90 = 106,427.40/x
3. Step 3: Cross multiply
   109,499.40x = 163,941.90 × 106,427.40
4. Step 4: Simplify right side
   109,499.40x = 17,447,910,168.06
5. Step 5: Solve for x
   x = 17,447,910,168.06/109,499.40
6. Step 6: Final answer
   x = 159,342.52