Finding the Fourth Proportional to 111,543.33, 153,989.81 and 85,993.71

Step by Step Solution

1. Step 1: Write the proportion equation
   111,543.33 : 153,989.81 = 85,993.71 : x
2. Step 2: Convert to fraction form
   111,543.33/153,989.81 = 85,993.71/x
3. Step 3: Cross multiply
   111,543.33x = 153,989.81 × 85,993.71
4. Step 4: Simplify right side
   111,543.33x = 13,242,155,064.10
5. Step 5: Solve for x
   x = 13,242,155,064.10/111,543.33
6. Step 6: Final answer
   x = 118,717.59