Finding the Fourth Proportional to 120,870.86, 166,800.58 and 67,154.72

Step by Step Solution

1. Step 1: Write the proportion equation
   120,870.86 : 166,800.58 = 67,154.72 : x
2. Step 2: Convert to fraction form
   120,870.86/166,800.58 = 67,154.72/x
3. Step 3: Cross multiply
   120,870.86x = 166,800.58 × 67,154.72
4. Step 4: Simplify right side
   120,870.86x = 11,201,445,909.96
5. Step 5: Solve for x
   x = 11,201,445,909.96/120,870.86
6. Step 6: Final answer
   x = 92,672.84