Finding the Fourth Proportional to 111,056.61, 166,410.56 and 75,534.87

Step by Step Solution

1. Step 1: Write the proportion equation
   111,056.61 : 166,410.56 = 75,534.87 : x
2. Step 2: Convert to fraction form
   111,056.61/166,410.56 = 75,534.87/x
3. Step 3: Cross multiply
   111,056.61x = 166,410.56 × 75,534.87
4. Step 4: Simplify right side
   111,056.61x = 12,569,800,205.06
5. Step 5: Solve for x
   x = 12,569,800,205.06/111,056.61
6. Step 6: Final answer
   x = 113,183.72