Finding the Fourth Proportional to 105,060.80, 144,927.78 and 71,024.60

Step by Step Solution

1. Step 1: Write the proportion equation
   105,060.80 : 144,927.78 = 71,024.60 : x
2. Step 2: Convert to fraction form
   105,060.80/144,927.78 = 71,024.60/x
3. Step 3: Cross multiply
   105,060.80x = 144,927.78 × 71,024.60
4. Step 4: Simplify right side
   105,060.80x = 10,293,437,603.39
5. Step 5: Solve for x
   x = 10,293,437,603.39/105,060.80
6. Step 6: Final answer
   x = 97,976.01