Finding the Fourth Proportional to 111,686.59, 154,128.69 and 60,699.32

Step by Step Solution

1. Step 1: Write the proportion equation
   111,686.59 : 154,128.69 = 60,699.32 : x
2. Step 2: Convert to fraction form
   111,686.59/154,128.69 = 60,699.32/x
3. Step 3: Cross multiply
   111,686.59x = 154,128.69 × 60,699.32
4. Step 4: Simplify right side
   111,686.59x = 9,355,506,138.42
5. Step 5: Solve for x
   x = 9,355,506,138.42/111,686.59
6. Step 6: Final answer
   x = 83,765.71