Finding the Fourth Proportional to 102,981.50, 142,116.64 and 58,269.50

Step by Step Solution

1. Step 1: Write the proportion equation
   102,981.50 : 142,116.64 = 58,269.50 : x
2. Step 2: Convert to fraction form
   102,981.50/142,116.64 = 58,269.50/x
3. Step 3: Cross multiply
   102,981.50x = 142,116.64 × 58,269.50
4. Step 4: Simplify right side
   102,981.50x = 8,281,065,554.48
5. Step 5: Solve for x
   x = 8,281,065,554.48/102,981.50
6. Step 6: Final answer
   x = 80,413.14