Finding the Fourth Proportional to 73,002.72, 108,985.56 and 70,410.72

Step by Step Solution

1. Step 1: Write the proportion equation
   73,002.72 : 108,985.56 = 70,410.72 : x
2. Step 2: Convert to fraction form
   73,002.72/108,985.56 = 70,410.72/x
3. Step 3: Cross multiply
   73,002.72x = 108,985.56 × 70,410.72
4. Step 4: Simplify right side
   73,002.72x = 7,673,751,749.20
5. Step 5: Solve for x
   x = 7,673,751,749.20/73,002.72
6. Step 6: Final answer
   x = 105,115.97