Finding the Fourth Proportional to 111,718.16, 154,171.72 and 60,731.29

Step by Step Solution

1. Step 1: Write the proportion equation
   111,718.16 : 154,171.72 = 60,731.29 : x
2. Step 2: Convert to fraction form
   111,718.16/154,171.72 = 60,731.29/x
3. Step 3: Cross multiply
   111,718.16x = 154,171.72 × 60,731.29
4. Step 4: Simplify right side
   111,718.16x = 9,363,047,437.12
5. Step 5: Solve for x
   x = 9,363,047,437.12/111,718.16
6. Step 6: Final answer
   x = 83,809.54