Finding the Fourth Proportional to 111,997.52, 154,559.76 and 64,259.36

Step by Step Solution

1. Step 1: Write the proportion equation
   111,997.52 : 154,559.76 = 64,259.36 : x
2. Step 2: Convert to fraction form
   111,997.52/154,559.76 = 64,259.36/x
3. Step 3: Cross multiply
   111,997.52x = 154,559.76 × 64,259.36
4. Step 4: Simplify right side
   111,997.52x = 9,931,911,259.35
5. Step 5: Solve for x
   x = 9,931,911,259.35/111,997.52
6. Step 6: Final answer
   x = 88,679.74