Finding the Fourth Proportional to 111,840.33, 154,288.82 and 66,492.60

Step by Step Solution

1. Step 1: Write the proportion equation
   111,840.33 : 154,288.82 = 66,492.60 : x
2. Step 2: Convert to fraction form
   111,840.33/154,288.82 = 66,492.60/x
3. Step 3: Cross multiply
   111,840.33x = 154,288.82 × 66,492.60
4. Step 4: Simplify right side
   111,840.33x = 10,259,064,460.27
5. Step 5: Solve for x
   x = 10,259,064,460.27/111,840.33
6. Step 6: Final answer
   x = 91,729.56