Finding the Fourth Proportional to 109,505.89, 164,276.58 and 42,909.91

Step by Step Solution

1. Step 1: Write the proportion equation
   109,505.89 : 164,276.58 = 42,909.91 : x
2. Step 2: Convert to fraction form
   109,505.89/164,276.58 = 42,909.91/x
3. Step 3: Cross multiply
   109,505.89x = 164,276.58 × 42,909.91
4. Step 4: Simplify right side
   109,505.89x = 7,049,093,262.91
5. Step 5: Solve for x
   x = 7,049,093,262.91/109,505.89
6. Step 6: Final answer
   x = 64,371.82