Finding the Fourth Proportional to 109,647.72, 151,304.76 and 64,320.96

Step by Step Solution

1. Step 1: Write the proportion equation
   109,647.72 : 151,304.76 = 64,320.96 : x
2. Step 2: Convert to fraction form
   109,647.72/151,304.76 = 64,320.96/x
3. Step 3: Cross multiply
   109,647.72x = 151,304.76 × 64,320.96
4. Step 4: Simplify right side
   109,647.72x = 9,732,067,415.77
5. Step 5: Solve for x
   x = 9,732,067,415.77/109,647.72
6. Step 6: Final answer
   x = 88,757.59