Finding the Fourth Proportional to 111,686.56, 154,128.64 and 60,699.29

Step by Step Solution

1. Step 1: Write the proportion equation
   111,686.56 : 154,128.64 = 60,699.29 : x
2. Step 2: Convert to fraction form
   111,686.56/154,128.64 = 60,699.29/x
3. Step 3: Cross multiply
   111,686.56x = 154,128.64 × 60,699.29
4. Step 4: Simplify right side
   111,686.56x = 9,355,499,075.06
5. Step 5: Solve for x
   x = 9,355,499,075.06/111,686.56
6. Step 6: Final answer
   x = 83,765.67