Finding the Fourth Proportional to 111,021.08, 153,210.30 and 60,719

Step by Step Solution

1. Step 1: Write the proportion equation
   111,021.08 : 153,210.30 = 60,719 : x
2. Step 2: Convert to fraction form
   111,021.08/153,210.30 = 60,719/x
3. Step 3: Cross multiply
   111,021.08x = 153,210.30 × 60,719
4. Step 4: Simplify right side
   111,021.08x = 9,302,776,205.70
5. Step 5: Solve for x
   x = 9,302,776,205.70/111,021.08
6. Step 6: Final answer
   x = 83,792.88