Finding the Fourth Proportional to 111,395.56, 166,941.72 and 61,400.74

Step by Step Solution

1. Step 1: Write the proportion equation
   111,395.56 : 166,941.72 = 61,400.74 : x
2. Step 2: Convert to fraction form
   111,395.56/166,941.72 = 61,400.74/x
3. Step 3: Cross multiply
   111,395.56x = 166,941.72 × 61,400.74
4. Step 4: Simplify right side
   111,395.56x = 10,250,345,144.87
5. Step 5: Solve for x
   x = 10,250,345,144.87/111,395.56
6. Step 6: Final answer
   x = 92,017.54