Finding the Fourth Proportional to 111,171.56, 153,415.23 and 60,870.56

Step by Step Solution

1. Step 1: Write the proportion equation
   111,171.56 : 153,415.23 = 60,870.56 : x
2. Step 2: Convert to fraction form
   111,171.56/153,415.23 = 60,870.56/x
3. Step 3: Cross multiply
   111,171.56x = 153,415.23 × 60,870.56
4. Step 4: Simplify right side
   111,171.56x = 9,338,470,962.63
5. Step 5: Solve for x
   x = 9,338,470,962.63/111,171.56
6. Step 6: Final answer
   x = 84,000.54