Finding the Fourth Proportional to 120,002.01, 180,116.01 and 60,880.11

Step by Step Solution

1. Step 1: Write the proportion equation
   120,002.01 : 180,116.01 = 60,880.11 : x
2. Step 2: Convert to fraction form
   120,002.01/180,116.01 = 60,880.11/x
3. Step 3: Cross multiply
   120,002.01x = 180,116.01 × 60,880.11
4. Step 4: Simplify right side
   120,002.01x = 10,965,482,501.56
5. Step 5: Solve for x
   x = 10,965,482,501.56/120,002.01
6. Step 6: Final answer
   x = 91,377.49