Finding the Fourth Proportional to 111,849.93, 154,301.86 and 66,502.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,849.93 : 154,301.86 = 66,502.10 : x
2. Step 2: Convert to fraction form
   111,849.93/154,301.86 = 66,502.10/x
3. Step 3: Cross multiply
   111,849.93x = 154,301.86 × 66,502.10
4. Step 4: Simplify right side
   111,849.93x = 10,261,397,943.41
5. Step 5: Solve for x
   x = 10,261,397,943.41/111,849.93
6. Step 6: Final answer
   x = 91,742.55