Finding the Fourth Proportional to 120,022.62, 180,146.93 and 60,900.72

Step by Step Solution

1. Step 1: Write the proportion equation
   120,022.62 : 180,146.93 = 60,900.72 : x
2. Step 2: Convert to fraction form
   120,022.62/180,146.93 = 60,900.72/x
3. Step 3: Cross multiply
   120,022.62x = 180,146.93 × 60,900.72
4. Step 4: Simplify right side
   120,022.62x = 10,971,077,742.79
5. Step 5: Solve for x
   x = 10,971,077,742.79/120,022.62
6. Step 6: Final answer
   x = 91,408.42