Finding the Fourth Proportional to 111,555.18, 153,945.29 and 60,566.90

Step by Step Solution

1. Step 1: Write the proportion equation
   111,555.18 : 153,945.29 = 60,566.90 : x
2. Step 2: Convert to fraction form
   111,555.18/153,945.29 = 60,566.90/x
3. Step 3: Cross multiply
   111,555.18x = 153,945.29 × 60,566.90
4. Step 4: Simplify right side
   111,555.18x = 9,323,989,521.18
5. Step 5: Solve for x
   x = 9,323,989,521.18/111,555.18
6. Step 6: Final answer
   x = 83,581.86