Finding the Fourth Proportional to 420,103.56, 630,155.72 and 180,061.69

Step by Step Solution

1. Step 1: Write the proportion equation
   420,103.56 : 630,155.72 = 180,061.69 : x
2. Step 2: Convert to fraction form
   420,103.56/630,155.72 = 180,061.69/x
3. Step 3: Cross multiply
   420,103.56x = 630,155.72 × 180,061.69
4. Step 4: Simplify right side
   420,103.56x = 113,466,902,330.98
5. Step 5: Solve for x
   x = 113,466,902,330.98/420,103.56
6. Step 6: Final answer
   x = 270,092.69