Finding the Fourth Proportional to 147,454.72, 203,487.60 and 80,386.72

Step by Step Solution

1. Step 1: Write the proportion equation
   147,454.72 : 203,487.60 = 80,386.72 : x
2. Step 2: Convert to fraction form
   147,454.72/203,487.60 = 80,386.72/x
3. Step 3: Cross multiply
   147,454.72x = 203,487.60 × 80,386.72
4. Step 4: Simplify right side
   147,454.72x = 16,357,700,724.67
5. Step 5: Solve for x
   x = 16,357,700,724.67/147,454.72
6. Step 6: Final answer
   x = 110,933.72