Finding the Fourth Proportional to 67,678.10, 101,523.55 and 18,430.10

Step by Step Solution

1. Step 1: Write the proportion equation
   67,678.10 : 101,523.55 = 18,430.10 : x
2. Step 2: Convert to fraction form
   67,678.10/101,523.55 = 18,430.10/x
3. Step 3: Cross multiply
   67,678.10x = 101,523.55 × 18,430.10
4. Step 4: Simplify right side
   67,678.10x = 1,871,089,178.86
5. Step 5: Solve for x
   x = 1,871,089,178.86/67,678.10
6. Step 6: Final answer
   x = 27,646.89