Finding the Fourth Proportional to 111,413.34, 153,770.06 and 66,116.30

Step by Step Solution

1. Step 1: Write the proportion equation
   111,413.34 : 153,770.06 = 66,116.30 : x
2. Step 2: Convert to fraction form
   111,413.34/153,770.06 = 66,116.30/x
3. Step 3: Cross multiply
   111,413.34x = 153,770.06 × 66,116.30
4. Step 4: Simplify right side
   111,413.34x = 10,166,706,318.55
5. Step 5: Solve for x
   x = 10,166,706,318.55/111,413.34
6. Step 6: Final answer
   x = 91,252.15