Finding the Fourth Proportional to 109,605.42, 151,267.03 and 64,321.43

Step by Step Solution

1. Step 1: Write the proportion equation
   109,605.42 : 151,267.03 = 64,321.43 : x
2. Step 2: Convert to fraction form
   109,605.42/151,267.03 = 64,321.43/x
3. Step 3: Cross multiply
   109,605.42x = 151,267.03 × 64,321.43
4. Step 4: Simplify right side
   109,605.42x = 9,729,710,764.31
5. Step 5: Solve for x
   x = 9,729,710,764.31/109,605.42
6. Step 6: Final answer
   x = 88,770.34