Finding the Fourth Proportional to 147,535.55, 221,011.72 and 80,856.35

Step by Step Solution

1. Step 1: Write the proportion equation
   147,535.55 : 221,011.72 = 80,856.35 : x
2. Step 2: Convert to fraction form
   147,535.55/221,011.72 = 80,856.35/x
3. Step 3: Cross multiply
   147,535.55x = 221,011.72 × 80,856.35
4. Step 4: Simplify right side
   147,535.55x = 17,870,200,986.42
5. Step 5: Solve for x
   x = 17,870,200,986.42/147,535.55
6. Step 6: Final answer
   x = 121,124.71