Finding the Fourth Proportional to 109,408.99, 164,047.76 and 42,769.75

Step by Step Solution

1. Step 1: Write the proportion equation
   109,408.99 : 164,047.76 = 42,769.75 : x
2. Step 2: Convert to fraction form
   109,408.99/164,047.76 = 42,769.75/x
3. Step 3: Cross multiply
   109,408.99x = 164,047.76 × 42,769.75
4. Step 4: Simplify right side
   109,408.99x = 7,016,280,863.02
5. Step 5: Solve for x
   x = 7,016,280,863.02/109,408.99
6. Step 6: Final answer
   x = 64,128.93