Finding the Fourth Proportional to 111,256.10, 166,810.35 and 61,360.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,256.10 : 166,810.35 = 61,360.10 : x
2. Step 2: Convert to fraction form
   111,256.10/166,810.35 = 61,360.10/x
3. Step 3: Cross multiply
   111,256.10x = 166,810.35 × 61,360.10
4. Step 4: Simplify right side
   111,256.10x = 10,235,499,757.04
5. Step 5: Solve for x
   x = 10,235,499,757.04/111,256.10
6. Step 6: Final answer
   x = 91,999.45