Finding the Fourth Proportional to 111,510.39, 153,814.35 and 66,156.27

Step by Step Solution

1. Step 1: Write the proportion equation
   111,510.39 : 153,814.35 = 66,156.27 : x
2. Step 2: Convert to fraction form
   111,510.39/153,814.35 = 66,156.27/x
3. Step 3: Cross multiply
   111,510.39x = 153,814.35 × 66,156.27
4. Step 4: Simplify right side
   111,510.39x = 10,175,783,668.47
5. Step 5: Solve for x
   x = 10,175,783,668.47/111,510.39
6. Step 6: Final answer
   x = 91,254.13