Finding the Fourth Proportional to 109,751.37, 151,455.69 and 64,421.34

Step by Step Solution

1. Step 1: Write the proportion equation
   109,751.37 : 151,455.69 = 64,421.34 : x
2. Step 2: Convert to fraction form
   109,751.37/151,455.69 = 64,421.34/x
3. Step 3: Cross multiply
   109,751.37x = 151,455.69 × 64,421.34
4. Step 4: Simplify right side
   109,751.37x = 9,756,978,500.42
5. Step 5: Solve for x
   x = 9,756,978,500.42/109,751.37
6. Step 6: Final answer
   x = 88,900.74