Finding the Fourth Proportional to 120,784.98, 166,596.53 and 74,829.72

Step by Step Solution

1. Step 1: Write the proportion equation
   120,784.98 : 166,596.53 = 74,829.72 : x
2. Step 2: Convert to fraction form
   120,784.98/166,596.53 = 74,829.72/x
3. Step 3: Cross multiply
   120,784.98x = 166,596.53 × 74,829.72
4. Step 4: Simplify right side
   120,784.98x = 12,466,371,318.72
5. Step 5: Solve for x
   x = 12,466,371,318.72/120,784.98
6. Step 6: Final answer
   x = 103,211.27