Finding the Fourth Proportional to 111,314.88, 153,620.82 and 66,019.68

Step by Step Solution

1. Step 1: Write the proportion equation
   111,314.88 : 153,620.82 = 66,019.68 : x
2. Step 2: Convert to fraction form
   111,314.88/153,620.82 = 66,019.68/x
3. Step 3: Cross multiply
   111,314.88x = 153,620.82 × 66,019.68
4. Step 4: Simplify right side
   111,314.88x = 10,141,997,377.74
5. Step 5: Solve for x
   x = 10,141,997,377.74/111,314.88
6. Step 6: Final answer
   x = 91,110.89