Finding the Fourth Proportional to 109,378.60, 164,019.30 and 42,796.60

Step by Step Solution

1. Step 1: Write the proportion equation
   109,378.60 : 164,019.30 = 42,796.60 : x
2. Step 2: Convert to fraction form
   109,378.60/164,019.30 = 42,796.60/x
3. Step 3: Cross multiply
   109,378.60x = 164,019.30 × 42,796.60
4. Step 4: Simplify right side
   109,378.60x = 7,019,468,374.38
5. Step 5: Solve for x
   x = 7,019,468,374.38/109,378.60
6. Step 6: Final answer
   x = 64,175.88