Finding the Fourth Proportional to 111,128.04, 153,357.66 and 65,808.54

Step by Step Solution

1. Step 1: Write the proportion equation
   111,128.04 : 153,357.66 = 65,808.54 : x
2. Step 2: Convert to fraction form
   111,128.04/153,357.66 = 65,808.54/x
3. Step 3: Cross multiply
   111,128.04x = 153,357.66 × 65,808.54
4. Step 4: Simplify right side
   111,128.04x = 10,092,243,702.42
5. Step 5: Solve for x
   x = 10,092,243,702.42/111,128.04
6. Step 6: Final answer
   x = 90,816.36