Finding the Fourth Proportional to 111,480.55, 153,832.98 and 66,150.72

Step by Step Solution

1. Step 1: Write the proportion equation
   111,480.55 : 153,832.98 = 66,150.72 : x
2. Step 2: Convert to fraction form
   111,480.55/153,832.98 = 66,150.72/x
3. Step 3: Cross multiply
   111,480.55x = 153,832.98 × 66,150.72
4. Step 4: Simplify right side
   111,480.55x = 10,176,162,386.75
5. Step 5: Solve for x
   x = 10,176,162,386.75/111,480.55
6. Step 6: Final answer
   x = 91,281.95